Currently Being ModeratedMay 9, 2012 12:15 PM (in response to JazzmanJohn)
I wouldn't say you have "nothing" to worry about, but you have a fair chance of having tackled it if you've updated your system. What procedures did you run to remove the Flashback malware? I'd recommend using a third-party removal tool such as those listed here, to see if they detect any instances of the malware: http://reviews.cnet.com/8301-13727_7-57413811-263/flashback-malware-removal-tool -roundup/
If not, then you should be good to go, and having updated your system you should be clear from the known variants of this malware.
Currently Being ModeratedMay 9, 2012 12:30 PM (in response to Topher Kessler)
I ran F-Secure and another one called Flashback Checker that I found on the MacWorld site.
Currently Being ModeratedMay 9, 2012 12:32 PM (in response to JazzmanJohn)
I would say if you did that and they found the system to be clean, then you're good to go. Having updated you've also run Apple's Flashback checker/remover, and have installed the latest version of Java that closes the vulnerability for this malware.
Currently Being ModeratedMay 9, 2012 6:29 PM (in response to JazzmanJohn)
The latest version of Java?
The one that was in Software Updates, if you have it installed at all. It doesn't come with a default installation of Lion, so you would have had to install it separately if an application you have needed it.
To see if it's installed, launch Java Preferences (found in /Applications/Utilities/). It will either tell you that it's not installed and offer to download it (don't do this unless you need it) or list the versions you have. The latest is 1.6.0_31 in both 32-bit and 64-bit varieties.
Back to your original question, there have been no reports that I have found of any residual Flashback issues for users that have installed all required Apple updates.
Currently Being ModeratedMay 10, 2012 7:12 AM (in response to JazzmanJohn)
If you have not had and do not have a Java update available in Software Update (or if you get the error that MadMacs0 describes when opening the Java preferences) then you do not have Java installed and you should not worry about updating it. In this case you were likely safe from the beginning.