stuttering youtube playback
is anyone else experiencing stuttering youtube video playback? i noticed this phenomenon right after updating to 10.7.3. when loading a youtube video, my CPU spikes to over 100% with the com.apple.qtkitserver process. audio seems to play but the video stutters until the entire video loads. once it is completely loaded, the video plays normally. furthermore, this phenomenon is isolated to only youtube videos, which i believe are only HTML5 and not flash. vimeo videos load and play back perfectly normal with no stuttering with either HTML5 or flash.
Mac mini 1.42GHz 1GB RAM, MBP 2.16GHz C2D 2GB RAM, iPhone, Mac OS X (10.5.1)