Re: On the positive side...
If BBM on android is an example of their current work, they're truly doomed.
First it hung when I first tried to sign in, because I'd set up my account on the PC only 30 seconds before, and that was too fast for it. No message though, just a white screen.
Then once I did get in ten minutes later, I added two real BB users to my BBM contacts and sent a few messages back and forth... and then discovered a problem... There is no log out. No exit... You can never escape... well you can, you have to terminate the app with extreme prejudice.
Logged in later to check I hadn't missed an obvious "allow logout" option, and was surprised to see I had a contact request to join a chat... from myself!
How odd I thought... And hit accept (out of curiosity more than anything else)... This appears to be the hidden logout function, as the app exploded.
And this was the app they released after the aborted release cock-up and month long wait... I don't even want to think how flaky the first attempt must have been.
RIP BB, if we're honest you've been rotting for quite a while now, and the smell is starting to annoy.