
WoWinsider posted an interesting blog entry about a 0day flash player exploit actually hitting:
According to reports, a new wave of exploits has appeared taking advantage of a vulnerability Adobe Flash Player. Allegedly over 200,000 web sites now have redirects to malware, including keyloggers, through embedded Flash. And we all know how evil keyloggers can be. Flash Player 9.0.115.0 appear to be the affected version.
source
The Flash Player 9.0.115.0 is the affected version, you can know which version you are running by using this Adobe link
To note that the version 9.0.124.0 supposed to be patched may still be exploited in a few cases like the linux version nor windows version with debug player ON. If you want to be fully safe, completely uninstall Adobe Flash Player for the moment.
Some technical reference links:
Sans
SecurityFocus
Adobe security advisories