AVAST ERROR POP-UPS

On 10/25/2012 while I was working on a file and listening to music (Pandora via FF) two pop-ups appeared. . . . . . . . .

Program Error
Avast Svc.exe has generated errors and will be closed by Windows. You will need to restart the program.
An error log is being created.
. . . . . . . . .
Dr. Watson was unable to attach to the process. It is possible that process exited before Dr. Watson could attach to it.
Windows returned error code = -805306334

On 10/26/2012 12:19 PM - Same messages as yesterday, this time while I was using Thunderbird.

Then I was worried so I dug around in Event Viewer and found this:
Event ID 7024
The Workstation service terminated with service-specific error 2250 (0x8CA).
Yes, I found the original error, too.

I couldn’t remember Avast announcing that it had updated, so I tried to manually update, but five hours later it had not completed the process, so I did a warm reboot. Miraculously it seemed, AVAST updated. I thought all was well, but no. This a.m. the same error messages popped up.

Can anybody tell me what is happening? Is there something I can do to fix the problem?