Yes, it's just firmware 2.0 problems, not your apps, don't worry.
This will all be fixed with 2.1 or 2.0.1 update...
Don't return it. And using .0 labeled software... you gotta expect it. Eg Leopard was buggy in 10.5, but with 10.5.4 it's now MUCH better, so these issues WILL BE FIXED!
@shoney Yes, that has happened many a time when I had 1.1.4 Jailbroken, a reboot solved it, but again, that will be a bug with 2.0, 2.1 will address this hopefully. Don't fret!
We all have these problems by the way. Just give Apple time to test 2.1 (or 2.0.1 however Apple labels it)
SuperMacMan