Thanks for the tour max.pretty sweet.
As I had suggested, the best connection is wired. You can always try to make sure there are no walls or electronics between your PS3 and router.
I don't know if you had tried this, but go ahead and delete your Cache and/or delete and reinstall Home. If you have any further questions, do contact me via the XMB (or Pm me here) and we can discuss it. I don't want to derail this thread.