Each Ubuntu version have declared end of support date. For example current Oneiric will be supported till April 2013. What does that mean and what happens by that time? If a bug is found in one of Ubuntu supported packages - will it be fixed?
I'm asking because I'm experiencing serious known problems with Compiz and Unity which make it completly unusable for me (bug #888039 + few other minor ones). Fixes have been released in Precise branch although Launchpad's status says it affects Oneiric (It's confusing too, but maybe I don't know the process well enough). Migrating to Precise is not an option for now and I just wonder if I can expect such fixes to be backported to previous - still supported version if for some reason I wouldn't like to upgrade to latest version.
I know it's hard to generalize but just wanted to know what can I expect from "supported" version.