gotchas: video tearing & openbox freezing with high hd load

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http://crunchbanglinux.org – So lately i noticed two problems:a. video tearing (integrated intel graphics) playing with mplayer or vlc does not make any difference (also testing many different mplayer options didnt help) - no difference if compositing is enabled or disabled either, also no difference if video is lowres or HD (cpu load is small, no more than 15% reported in all cases).to test:http://crunchbanglinux.org/forums/post/250393/#p250393b. openbox freezes under heavy hd load (That looks similar to a problem with really old kernels, i think i remember that from jaunty and perhaps karmic running gnome) - and i mean (HowTos)