No. However, install it and let it do its thing, because it adds some fixes to the OS.
carol afromfl wrote:
If "flashback malware removal tool" was in your software updates...does that mean you have the flashback virus?
No, it just means that you are running Lion and do not have Java installed. The update will simply check for any previous infection and let you know if it finds anything. If it doesn't find anything it will quit without any notices. In either case, it will then delete itself and you can sleep easy until the next one comes along.