Iv never had these problems... with the pro, or the slim.
If they keep getting rings, n freezing, it might be because the xbox is in a tight space, and cant get air to cool down,, or there is too much dust. to get rid of the dust, turn off the xbox, and unplug it at the mains,, then thoroughly hoover it (if needed, tahe tyhe case off, and carefully clean it)
or mabie the memory is too full (it shouldn't affect it... but sometimes it does, weirdly
i hope this helps ^^^
also.. probably not the place to post this, but are you interested in joining the Agent clan for the Xbox?
defiance forums;
http://forums.defiance.com/showthrea...an-recruitment.