I've reviewed the suggested questions, based on my title, so apologies if I'm going over old ground.
Opera 11 recently came out. Whilst I use it as my RSS aggregator, I don't use it for any other messaging purposes. So I'm annoyed with, whenever I open Feeds->Read Feeds, I suddenly get the panels side menu, and the Mail panel opened automatically. This is new behaviour from the 10.x series, and I can't seem to find an option to turn it off. When I go to "Read Feeds", I just want the feeds window to open. That's it.