Bizarre Final Cut Pro Problem & Internet Virus

[animal]

Update:

I've just discovered that two more people I've emailed have been 
infected by a virus in the last few days, yet my new Symantec 9 
Antivirus (updated on the internet also) still says I'm uninfected.  
This is wacky.  Can a mac spread a PC virus while scanning as 
uninfected?  None of this could be related to my FCP problem - but I 
don't want to be infecting anyone either.

Lynn