If you have problems with deleting owners, or manually adding owners, go get the HUD v.5.00.03. Details here. Again, thanks to Lanita Wingtips for discovering the bug.
No need for re-setup if you’ve already got a v.5 HUD, just choose “transfer” at the Welcome menu.
Remember, first-wear might result in some Mono errors (an SL feature!). Just follow Smart Reset 2.0 instructions and it’ll recover.
Also check out the known issues (in the unreleased bugfixes) on the What’s New cuff page (which you can also access via “/1.help” and hitting “latest fixes”).
Otherwise, if you find something amiss, send me a bug report with details on how to reproduce it.