rev interferes with Mozilla ThunderBird

[Jon]

All hell broke loose last night.  When I got up, Norton Antivirus 
claimed it was unable to complete a scan because it ran out of 
resources, and recommended uninstalling and reinstalling.  And Mozilla 
Thunderbird suddenly claimed I had no email accounts and no saved 
messages. I rebooted.

It took an hour or so to get the help I needed to restore ThunderBird (a 
preference file had been corrupted: the data was all there, just not 
properly connected).  And Norton seems to be scanning along just fine, 
hour after hour.

ThunderBird is behaving strangely, though.  When I try to delete a 
message, it doesn't work most of the time.  If I kill Rev, TB works just 
fine.

TB did not work this way yesterday, and Rev is the only new software 
I've been using for the past week, so I'm tempted to "blame" Rev for the 
current rash of problems.

Does any of this sound familiar to any of you?

:)

Jon