In preparation for the push to a new release of jQuery, I've been cleaning up bug reports in the jQuery core bug tracker. Many tickets languiished because they weren't actually jQuery core bugs, but instead should have been reported on the forums or sent to the author of the plugin. jQuery UI also has its own bug tracker, http://dev.jqueryui.com/ .
If I accidentally closed a ticket for the jQuery core code, feel free to reopen it. Please take the opportunity to check that the ticket has a clear test case and describes the browsers where you have been able to reproduce the problem. In general it's a good idea to post the problem on the forums to get a consensus on whether a bug ticket should be opened.