New to XBMC, some problems

Hi

I recently purchased an Xtreamer ultra 2 which came with openelec eden ( some beta) preinstalled, i then almost immediately upgraded to the frodo openelec rc3 build for this device, which ran really bad with freezing of the system all the time. And then i downgraded to eden2.0.0 openelec, which seems to run fine.

Btw sorry i'm talking about openelec in this forum, because its own forum keeps failing, some problems with their mysql db or something. Bit i'd really like to get some help on this.

Problems i'm having:

1) i can't select or download another theme than confluence theme cause just about every theme is 'broken' in the repository.

2) i keep getting some widget script error in lower left corner of screen .

3) is it weird that when i'm scanning media and doing some other stuff like in settings or in addons that i,stilll get
Freezes.

4) Alot of addons are broken in repository, like youtube, is this normal??

5) is openelec the best choice for this device or would something else better?

I hope i can get some help here.

Thanks

Bram