This phenomenon was also noted in the CIX confferencing system.  I did not notice it at once, but it did happen within a number of weeks.  It seemed to be linked to a general slowing  down of my system.  I don't use F-Secure, but F-Prot, but I believe this uses the same scan engine. 

I'm using version 4.31. A couple of days a ago noticed significant change when writing emails, the programme has substancially slowed down. The only reason  I can think of is the  uppgrade of the F-Secure virus that was done  before this incident.

To fix the trouble I tried to install the newest version of Pegasus, but got an error message "Error 0 running command .\setup32.exe"

 Any ideas?

Olli Raitakari