smlluvc.exe virus

My computer has ground to a halt over past couple of days and am thinking it could be to do with this virus.
Googled it but to no avail.

It shows in avast virus chest as:

NAME: smlluvc.exe LOCATION: d:\windows\system32

my computer now:

1/ needs to start from dos prompt
2/ dropdown list fly all over the place when you put the mouse to it
3/ very unstable initially but seems to calm down after a while

All seemed to happen after a firefox4 install, have since totally removed but to no avail

Any help gratefully recieved

thanks,
Mike

Follow this guide from our expert malware remover Essexboy
http://forum.avast.com/index.php?topic=53253.0
( post the logs here in this topic and not in the guide )

To avoid using multiple post with copy and paste you have to attach the log`s
Lower left corner: Additional Options > Attach ( Malwarebytes log / OTS log )

Essexboy will look at the logs when he arrive here later today…