I'll file this bug to keep track of all the accelerator bugs and issues in mailnews. If you find any bugs missing then please add them. Accelerators is a very important accesability feature and thus it's important to keep track of those bugs.
Adding the bugs and some mailnews QA's - feel free to remove yourself from the list if you're not interested in this bug. Sorry for the inconvenience.
Maybe aaronl is interested in this?
Added keyword nsbeta1 to 8 UI Mailnews meta bugs.
everything here is resolved - closing WFM