On my mac I have both Quicktime X and Quicktime 7 pro. Both applications seem to be crashing quite often lately. This happens when playing all files types. I notice it more with .flv file. It usually happens when i grab the time slider bar and try to move it. The apps will freeze and I have to "force quit" to get them to close. Sometimes putting the computer to sleep and waking it up helps. Is there a way to remedy this?