Removing “Use the web service to find the correct program” Dialog
Did you noticed that every time you open file with unknown extension or file type, it opens this dialog box:

Removing Conficker/Downadup Virus
Conficker (A.K.A. Downadup) virus is a computer worm that does irritating things to your computers. Although it doesn’t destroy your operating system, but it does so many things to a point that your computer becomes too slow to be usable.
The worm takes advantage of a bug in Windows that’s why it is able to infect a computer by just going through the network. You can also get infected through memory cards or USB thumb drives.
At the moment, it seems that infections of this worm from USB or memory cards were very rare and most of the infections we saw were coming from network.
Slow 3G Connection Fix for Windows
Are you using 3G Modems such as Huawei E220, Sierra Air Card, and others? I'm pretty sure that you can't open some of the web sites. You can test this by going to http://support.microsoft.com and see if you could open the site.
Some people experience very slow overall internet connection and you're not reaching the published speed of your 3G provider.
Now, I have good news for you. It’s a bug and it can be fixed. It's a registry tweak that will adjust the Maximum Transmission Unit (MTU) of Windows that's just right for 3G connection. In layman's term, it sets the maximum data it can sends at a time.