In case the following might give you peace of mind . . . .
I used information from - How to remove the Flashback malware from OS X
- under the section "How do I detect it?" - to see what Terminal reported for my Mac OS X 10.6.8 system.
I copied and pasted the three lines from the above link and section which began with
into Terminal and pressed enter.
Three results stating "does not exist" were returned.
Then I did the same for
ls -la ~/../Shared/.*.so
"No such file or directory" was returned.
As far as I know, my system has all of the available updates installed.