Well, I got tired of battling this Sendori thing, so a second fresh install later and everything's running perfectly again.
Ashbad, just out of curiosity, how did you get this thing, uh, "installed"?
I'd love to say I had some sort of idea, but to tell the truth, it beats me

I'd suspect that at one point I installed something slightly shady, and that somehow in turn installed this as well.
I'd really be tempted to tell you to abandon Windows to the profit of Linux, but that would be bitter flavoured and it's not my intention.
The only help I can give you is a link to a pertinent suggestion from google: http://answers.microsoft.com/en-us/protect/forum/protect_other-protect_scanning/how-to-remove-sendori-malware/a35e5c4b-63c5-4a59-abab-669a76717ed9
Indeed, I followed those steps, and while it subdued it for the time being, upon next reboot everything was back to square one again. A fresh OS install zapped it, though

As for the linux suggestion, no need to suggest installing something that I already have running on two other computers at home!
