Belgique,
It's like taking up stuttering and stammering.
This could be either your harddrive is full and it cannot disk cache anymore or it could be one of the symtoms of a virus. Lets run an online scan of the comp just in case:
Trend Micro's Housecall
Take Care,
Capt. Richard J. Gentil, Pres.
Naples Air Center, Inc.
Custom Computers of Naples, Inc.