Online forum discussions are indicating that Rapidshare has started blocking certain IPs from uploading and download on their network.
This could be based on the IP history if the same IP has been used for major copyright infringement in the past.
The company itself has not stated about any such policy. Rapidshare users are however facing the problem accessing their accounts from certain locations.
This seems to be just another development based on the recent shutdown of Megaupload. Rapidshare continues to claim that they are operating a legit file sharing operation and they are very different from Megaupload.