I've installed the app on my iPad and currently using it to check for errors, so far it's not that bad.
I have no problem logging into the same account on both computer and device at the same time.
Yes, the log in problem with account names with spaces is still in effect, since I've used my mules to test as well. Not a problem when sticking the names together without the spaces.
Problems I've encountered are glitches when opening the announcements, and PMs.
On the PM: After hitting the button and waiting for 2 minutes of not appearing or so, came up with a " Log-In Error: can't fetch data!" notice, then I realized that I was booted out of the system and have to relog in.
When opening the Announcements and Notifications, different types of behaviors came up:
1) the slide-in page went blank, and then the app closed down. Tapped on the app again, the app kept my log in mode.
2) lists appeared, return back to main page but then app closed down, retap back into the app and showed i was logged out.
3) trying to click into the announcements and or mail, but the whole app completely frozed up.
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hmm, I am also wondering if it's possible to open already-recieved PMs, Notifications, and Announcements in places where there's no WiFi available. My iPad is not the 3G version, and I don't stay around WiFi areas as much. And then adding status update abilities similar to twitter would be fun.