Free anti-virus: MS joins the fray

MS has produced a free anti-virus program. It rivals the best- which are Avira's Antivir and Alwil's avast! There's a nice review here, based in part on detection rates, where MS, Antivir and avast! do well. Antivir comes out on top, but largely due to avast!'s counter-intuitive scanner GUI- which is due to be replaced when avast! 5 comes out very soon.
One point to note is that if you have set up limited user accounts for family members, those limited users will be able to disable protection if you use Antivir, because the limited user password setting is only available in the paid version; with avast!, you can set a password so limited users will not be able to disable AV protection.
UPDATE: More on the recent test of detection rates here.

Your operating system is not supported...

Looking into cable modem problems in Ubuntu recently, I came across a few horror stories about Comcast, the American ISP. Technicians who have never heard of Linux and insist they can only install the Internet to a Windows computer, that sort of thing. So it was a surprise to come across this blog post by a guy called Linus.
I guess it all depends on who you are, or possibly what you know.

So I need to provision it (ie letting Comcast know about the new modem MAC address), so I call up Comcast. It being a Sunday afternoon, I was expecting that I'll just have to wait for Monday to get it sorted out. But no, not only is there a friendly tech who is greeting me with neither silly muzak nor waiting, but she's happy to get my all provisioned and up and running with a new cable modem in minutes (ok, so it took more than a couple of minutes, but a lot of it was literally waiting for the new cable box to boot up a few times).

The clue in the image above is the telephone number: just call and ask for the ISP to provision your modem seems to be the answer.

Ubuntu and cable modems

The other day I was trying to help somebody on the Ubuntu forum get an internet connection. I didn't notice at first that it was a cable modem (of which I have zero experience), but when I did, I decided to look into how they work. (The thread is here.)
There seems to be a lot of confusion around as to how to get a cable modem connected and working with Linux, how to solve connection problems, and how to connect a different computer or a router.
Here are the myths:

• Cable companies only support Windows or Mac.
  
• You'll need to spoof the MAC address of the computer originally connected to the modem in order to connect another computer or a router.

Here's the reality:

• ISP software may only work with Windows or Mac, and technicians may only know about Windows and Mac, but there's actually no obstacle to getting a connection. A modem connected to a cable network needs to be "provisioned": the cable company needs to know the MAC address of the modem. They can do this at their end, or the cable guy can do it at your end. If it's done at your end, the cable guy will need Windows or Mac. If you have Linux, the advice is: just get the cable guy to connect the modem and tell him you'll call the provider service line to provision the modem.
• After connecting a different computer or a router to a cable modem, power down the modem for 10 minutes before connecting (the computer and/or router should be off while connecting too). Power up the modem> (router)> computer and everything should be fine (no need for spoofing). A good guide is here.

In Ubuntu, make sure DHCP is enabled unless the cable Internet provider has told you to use a static IP address.
The original poster at the Ubuntu forum thankfully managed to get his connection working, despite my fumbling around for a solution.

No DSL Internet in Ubuntu?

This seems to be a fairly common issue for Ubuntu users, perhaps because many people have their broadband service installed by a technician, or insert a Windows CD from their ISP to walk them through the process. Faced with a router, a cable or two, and a fresh installation of Ubuntu (or other Linux distribution), getting a DSL Internet connection seems an impossible task.
In fact, it's quite simple- if your modem has an Ethernet cable. (USB modems are the work of the devil as far as Ubuntu is concerned- they all require proprietary drivers, which Ubuntu doesn't supply. They can be got to work, but it's a tricky job even for somebody familiar with Ubuntu. Other Linux distributions may work "out of the box" with a USB modem, but that's not the subject of this post- anyway, an Ethernet connection is faster, doesn't require any extra software of firmware, and leaves a USB port free.) If your modem has a choice of USB and Ethernet connection, use the Ethernet cable.
Plug in the modem (phone line, Ethernet and power), open a web browser on the computer and type in the modem/router's IP address- this should be four numbers separated by dots, something like this: 192.168.1.1, 192.168.0.1, according to the manufacturer- If it's not in the documentation, Google the make of you modem/router and you should find the address quite easily.
If you can see the set-up screen of the modem/router, it's just a question of making sure the router has the right settings. (If you're unlucky enough to find that your router is not configured via a web browser, have a look at this Ubuntu guide.)
If a computer has been connected to the modem/router before, then the modem/router will probably have been set up to connect to an ISP service, and the modem/router may assign your computer an IP address so your computer can access the internet via the router/modem. (If there's no connection, try enabling DHCP (a service which automatically assigns an IP address to connecting computers), otherwise you will have to tell Ubuntu to use a static IP address. DHCP is the easiest method.)
If you're connecting for the first time, or changing ISP, you will have to tell the modem/router how to connect to your ISP service. Typically this involves entering your username and password, and settings for Protocol, VPI, VCI and Encapsulation. These details for most ISP's in the world can be found here.
This should be enough to get you connected to just about any ISP in the world with many makes and models of Ethernet modem/router. Got a USB modem/router? Well, connection may be possible, but help is beyond the scope of this post. Try this Ubuntu guide, or the Ubuntu Forums- also a good source of advice for connection problems not covered in this (very basic) guide.

Opera on Ubuntu

Opera is a great browser for Windows, and it works on Linux too. In Ubuntu it's available in the Canonical Partner Repository (free software that is not open source), so no need to use an installation file, and updates will be available through Update Manager.
However, updates can be slow to appear. Opera has its own repository, to which updates are added much more quickly.
I'd been using that repository for quite a while, when I began to get messages from Update Manager that the repository could not be found- some research revealed it had been moved. I couldn't find the new location, so just removed the repository.
With the release of Opera 10 recently, I was impatient to try the new version on Ubuntu, but the Canonical repository still had the old version. I searched again for the location of the Opera repository, and found it- but this time I just couldn't get the key to work.
I found the solution here- the answer was in this comment. Copying and pasting the key had transformed an emdash into a hyphen- to the eye, the same thing, but in a Terminal command, very different.
Thanks to Kyle Baker and greenpossum.

Favicon malware

Nothing could seem more innocent than a favicon. It's the little website icon that sits next to the website address in the browser address bar and is added to your list of favourites (or bookmarks according to the browser you're using). But the little favicon.ico can be infected with malware. (See here and here.)
Nothing is more frustrating than a malware detection from your anti-virus program which reappears every two minutes whatever you do, as seen here on the avast! forum, and here detected by AVG- favicon malware was the cause both times, of course.
But why was the malware reappearing every two minutes? My best guess is that IE was downloading missing favicons, either after the cache had been cleared, or malicious favicons deleted.

Microsoft anti-Linux FUD

Microsoft doesn't want you to use open source software. And the way they get you not to use open source software is through FUD. The latest example can be found here, where MS is "indoctrinating" sales staff in the reasons customers wouldn't be happy with Linux.
Now it's perfectly true that Linux doesn't run Windows programs. If you really want to run MS Word, you'll need Windows; but if you use Open Office, you won't. Fair enough, customers should know this.
Linux doesn't run Windows games* (*Some will run in Wine, but the performance can be poor.) If customers want a games machine, they'll need Windows, fair enough, although I actually think a dedicated games console can be a better option- games take up huge amounts of disc space, require a powerful video card which can add the price of a games console to a PC, and if my experience with Half Life is anything to go by, can rip a HD to shreds with crashes while reading or writing to the HD leaving bad sectors.
Now we come to hardware. My printer, camera, MP3 player, wireless dongle and external hard drive all ran out of the box on Ubuntu Linux. I had to install some firmware for the scanner to work, but I'd've had to install a driver for it to work in Windows- in fact my printer doesn't work in Windows because I haven't installed the driver. Good manufactures support standards and Linux, and their hardware works in Linux. (HP is a shining example.) Verdict: FUD.
Finally, Internet Messaging. No, you can't get Window's Live Messenger on Linux. Yes, you can have IM with a multi-protocol IM client* like, in Ubuntu, Pidgin. (* Supports multiple accounts- MSN, Yahoo!, Google, ICQ etc.) No, Pidgin doesn't support video chat on MSN (and I don't know of any Linux IM client that does.) Linux does have Ekiga, a free video chat client, and Pidgin does support video chat on GMail, but I can see that it's not going to be convenient for a Windows users to get used to a new IM program, or a Linux user to video chat to a Windows user.
This is a big turn-off for prospective Linux users, or indeed, purchasers of Linux computers (netbooks, probably) who ask: where's Windows Messenger?
This is of course intentional: that's the way Microsoft works: get you used to their product so it's just too much effort to change.
Verdict:FUD. There's no reason to be locked in to Windows. There are alternatives to the Microsoft IM network.