As always, when we release a new version of Snort (yesterday's 2.9.3.0 release), I need to update the EOL notices on the website for versions that are going to die soon.
So, I've went ahead and done that. https://www.snort.org/eol
2.9.1.2 will EOL on October 17, 2012
2.9.2.1 is EOL now (actually EOL'ed last month, we've just now removed it)
2.9.2.2 will EOL on August 15, 2012
2.9.2.3 is now the current minus one
2.9.3.0 is now the current version
Please see the above link for further details, and be sure and upgrade soon!