I have much the same problem as this guy did: http://www.bleepingcomputer.com/forums/topic283939.html
There are a few issues here I guess
I have a windows XP
Browse the web on IE8
Usually stick to the same 'safe' sites but recently picked up a virus of some sort.
I have run Rkill and Malwarebytes a number of times over the last few weeks in safemode (as per instructions on this site) and discovered trojan viruses each time.
But now I have something that is constant regardless of virus scanning.
First of all my computer is much slower than normal.
I've moved all my files images movies etc.. off the c drive to free up at least 7gb of space.
Run defragmenters, ashampoo... all sorts of clean up and improve applications.
This hasn't made any difference.
Initially when I log on to IE it runs ok - but much slower than normal - when webpages open, I find I have to wait a minute before I can move the page up or down, or click on the next link.
After 45 minutes or so, I find that some links will no longer respond to me clicking on them, and I have to refresh the page and then click on them.
After about an hour, the menu bar goes black - if I hover over where the options usually are 'file' 'edit' 'view' etc.. they appear.
By this stage what ever link / page / website I try to go to - I just get the 'you are disconnected from the internet' page come up. - Although my computer still tells me that I am connected to the internet, and my modem is lit up etc..
Also when I type fast on the keyboard, it seems the computer can't keep up and some keys just don't register.
Orange Blossom - thankyou for your advice.
I tried to run DDS and gather a log - but once scanning, and after some time, the computer freezes - it is possible to move the mouse around, but nothing is clickable.
Failing a few attempts at that, I moved on and got the gmer log, which is attached.
Any help would be much appreciated, and thank you in advance.