Having been upgraded automatically to VS+2009, I've found today (one-off instance) that when waking my machine from standby, (all) McAfee services are disabled. SC offers to fix the issues, but I just restarted my machine, and all was well.
I've seen this before with VS8 when waking from hibernate on Win2K machines.
Just reporting the first instance of this. Will keep an eye on things. I'll remark that I regularly standby VS+2009 machines, and this is the first time that I've seen this happen.