I have had a few posts related to this in my skin thread. About 4 people have reported it so far. Here is one of the messages, that looks almost exactly like what you described above. He mentions iGuidance, which fits perfectly with your GPS issues as well.
Here are couple of the posts from that thread:
I personally have not run into this problem on my machine, using the same skin that they are using, and the same version of RR.