Check the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Terminal Server\AddIns\Clip Redirector
The Value for name should be RDPClip (without path).
If the key is right than you have a loop in your clipboard chain, if you kill rdpclip and restart it your problem is probably gone (temporarily). Although you likely suspect
bds another app that you are running could be causing the loop (VMWare has a clipboard chain too through, try disabling the vmware clipboard options).