Windows XP Pro, Dell XPS 410, IE7.
Following another thread with this problem I downloaded and ran MBA-M and then HJT. Both logs attached.
Symtoms still exisiting: desktop theme is corrupted (image changed to ahtn) and embedded weblinks get hijacked to other sites. I've deleted all temporary Internet files, forms, password etc (left the cookies alone).
One other (cooincidental???) happening is that one of my RAID drives failed on reboot after HJT.
What next please?