Good morning, jddins
Don't want to raise any discomfort but also read ...
Just in case.
No need for the F-Secure tool if you have run all the updates recommended by Software Update. That will include an even better Apple tool for removing Flashback if you were infected. It will also insure that you have the latest Java and Security updates to protect you against all currently known OS X malware.
My system , imac Mac oxs version 10.6.2 has started to show the above error message when ever I try to open a web address
Same web site each time?
It's crashing so you need to copy and paste details of the crash report here so folks have some idea of what's going down.