Never had any problem with FF but sinds FF10 started the litttle problems on my laptop. '''Sinds FF12 dutch version I have this problem:''' When activating youtube movie on www.century21secondhome.com, the movie don't play well. He stops when de slider changes from image (fade). I have windows xp prof. FF 13.0.1 dutch version. all the latest add-ons are updated. Notice: On my hotmail account I have some problems with Silverlight, slow. extra info. Greetings from Martin a FF fan.