Every time I us this on my home pc, after one or two clicks to open up titles etc. the product locks and I have to go to task manager to clear it. The programme (eventually) says it has closed but I don't think it does. After this everything runs slower. When I eventually reboot I get the windows message saying it is trying to close DVD shrink. I thought it might be because my disc is fairly full but I have recently put in an additional 120gb hard drive and reloaded shrink onto that. Any suggestions anyone???