slow shutdown speed in ubuntu 8.10
I am a new user of ubuntu 8.10. Since past few days, my shut down speed has reduced considerably. Same with restart. Whenever I try to shut down or restart my pc, the screen freezes for 5-7 minutes before the system turns off. The system freezes when the screen shows something like command prompt where in I am able to type. But the system doesn't responds. And after 5 mins the system turns off.
Please help me..