Several times in a week my computer slows to such a pace as if ut appears to have frozen. Although I usually have only one programme going, the Task Manager reports 100% CPU usage on 37/38 tasks running. The only way I cna find to resolve this temporarily is to close the computer down. When do this there is a report which say DDE Window not working. I end that taks and the computer closes. On rebooting everything works perfectly. Can anybody help?