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Message: <blockquote data-quote="tape" data-source="post: 1606305" data-attributes="member: 178954"><p>Updated OS to 10.9.5 the other day.  This morning, I my usual programs running (safari, mail photoshop, iTunes, word, excel, calendar, copy paste) with Safari the only one that is actively being used.  I then opened iTunes and updated apps and decided to add an app to iPhone after I removed most music and sync.  While that was happening, I noticed my mouse began to move in a slow jerky fashion.  I began to quit programs but to no avail.  If I moved mouse to very top menu bar, it moved side to side normally, but as soon as it dropped down to the screen, it began to jerk around.  I went to my activity monitor but nothing was using a big piece of the CPU or memory.  Any ideas??</p></blockquote><p></p>