How does Ubuntu support work

view full story

http://askubuntu.com – 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 (HowTos)