Quicktime X bug?

I notice this problem when playing wmv movies on Quicktime X. When the video is playing and you click forward, say to the half of the video, instead of playing, it'll pause the video. Anyone else have this problem or know of any fix? Also, sometimes when playing high res videos, if you click forward, it'll just play the audio and you have to wait 20 seconds or so for the video to catch up. In Quicktime 7, it'll just buffer or whatever for 2-3 seconds and then resume playing.