Thanks for all the help.. .. .I have 192MB RAM. I have the latest Norton antivirus. Yes I did have a virus problem but I am sure the Norton has sorted it.. .. .Is the swap file the same as virtual memory? if so I have it set for Windows to manage the virtual memory.. .. .This is also an intermittent problem, but only occurs with Pprune. <img border="0" title="" alt="[Confused]" src="confused.gif" />