Centinel.vxd is a Virtual Device Driver used by Panda Titanium 2004.
> Good call on the antivirus improper shutdown..
> I'd love to know how you figured it out.. must've
> been a different search engine than the ones I used!!
This happened to me today, which is why I went looking for info about this file, and found this thread. There's not much on the web, at least in English, about it.
But if you look at the link provided by the first reply, the one on the Symantec website, under the "technical details" heading, this sentence appears:
"In an attempt to avoid detection, Backdoor.Delf.C stops the following processes of some common antivirus and firewall programs:"
CENTINEL VXD is one of the files listed there, so Symantec is saying that CENTINEL VXD is one of the "common antivirus and firewall programs". A bit cryptic, and it doesn't say whose antivirus program it is, but it does imply that it's one of the good guys, not the bad guys.
Hope that helps.