I have a client with a strange problem, he is losing paste functionality quite often on his XP machine. the functionality affects all programs. Copy icon is available, but paste is not. It doesn't matter if he uses the mouse or keyboard shortcuts.
I have noticed a few other posts with similar problems, but none seems to have fixed ours so far. Here's what we have tried so far - any ideas would be appreciated..
-Spyware scan using Spybot, adaware and Windows defender (found a few malware, but after cleaning the problem has not been resolved)
-sfc /scannow as per the suggestion in http://www.experts-exchange.com/Operating_Systems/Q_21417828.html?query=paste+function+XP&clearTAFilter=true
(this fixed the problem temporarly, but it came back not long after a restart).
-Checked for RPC and lsass eroors in the event log as per article http://www.experts-exchange.com/Operating_Systems/Q_21217426.html?query=paste+function+XP&clearTAFilter=true
none present and RPC is running fine.
After a reboot, the function works fine for a while, then suddenly disappears. Drag and drop still works, but only to move objects, not copy.
Thanks for any suggestions you can give