My computer has begun to stutter. To describe it I'd say that when Spider Solitaire is dealing cards, the process is sometimes not smooth, but stalls out, then resumes. My Print Shop projects sometimes, but not always, do the same. Sometimes Outlook Express does it. I've emptied the temporary internet files. I haven't added any new programs or downloads. I keep spyware out. I've checked for viruses and there aren't any. This started about four days ago out of the blue. Can you help? Thanks.