like so many folks, I got hit by the Google Redirect problem (IE and Firefox). Tried many things, without success - so far.
During one of my searches, I came across the following simple manipulation that got rid of the symptoms:
1. on an uninfected PC (in my case, my company laptop), copy the file "atapi.sys" (located in C:\windows\system32\drivers) and paste it somewhere else (for instance, on the desktop).
2. change the properties of this new file to "read only"
3. put this file on a memory-stick
4. if you don't trust me or this manipulation: on the infected PC, rename the existing "atapi.sys" file to "atapi-old.sys" or whatever you like.
5. copy the clean "read-only" file from the stick to the C:\windows\system32\drivers directory of the infected PC.
6. restart your browser. You should be OK now.
As I stated above, this fixed the ****symptoms*** on my PC. This means that the underlying problem is not fixed!!! I leave it to computer savvy folks to figure out which process is accessing atapi.sys, and by which mechanism this file affects the browsers. Note that if you copy a clean atapi.sys - that is NOT read-only - to your infected PC, it will get overwritten in a matter of seconds or a minute, and the problem is back again...
Hope this helps!
Edited by Budapest, 29 August 2011 - 06:04 PM.
Moved from XP ~Budapest