MacBook slows down when playing movies

deskjet

macrumors newbie
Original poster
Jul 10, 2007
9
0
About a month ago my Macbook (which I bought 4 in May) started getting really slow when I played movies with quicktime or used Front Row. The entire computer slows down and the fan ramps up for about 2-3 minutes until the movie starts playing. After that everything is normal again until I start playing a movie or go back to the Front Row menus. This seemed to start when they updated the latest version of QT but that may be a coincidence.

Any ideas what could be causing this?

thx.
 

deskjet

macrumors newbie
Original poster
Jul 10, 2007
9
0
Oh, when I check the activity monitor it shows that CPU goes to 100 and Quicktime is unresponsive. RAM is fine.
 

deskjet

macrumors newbie
Original poster
Jul 10, 2007
9
0
Not sure which codec, they're mostly .avi files but it seems to happen anytime QT or Front Row is used regardless of the file type.
 

deskjet

macrumors newbie
Original poster
Jul 10, 2007
9
0
Yes, I've repaired the permissions. Doesn't seem to have made a difference.
 

deskjet

macrumors newbie
Original poster
Jul 10, 2007
9
0
Another thing, the movies play fine with VLC. Only Quicktime and Front Row cause the slow downs.