i have tried to download and run the 2.0b8 for OSX with 2 computers (imac, macbookpro) running 0SX 10.6.8; as for the macbookpro the app launches but the work window is very very strange, with only 1 line on the top. If i try to open some sketch it fails with a lot of errors which seem to be relative to java security exceptions. On the other mac (imac) processing launches normally and if i open some sketch from myself they run well. Yet, if i try to open a lot of the " java examples"  the display window flickers or shows inconsistent lines or shapes (picture below): but there is not any error message. Sometimes also, but not often, the examples run normally...