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zipcode1

macrumors newbie
Original poster
After installing Mountain Lion, my computer goes slow and often the desktop image and icons move randomly. If I click on any program or document nothing happens at first. After a few times, the desktop goes back to normal. What can I do? Thank you in advance.
Here are my specs:
OSX Version 10.8.5
Processor 3.06 GHz Core 2 Duo
L2 Cache: 3 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version:IM101.00CC.B00
SMC Version (system):1.52f9
Storage 315.5 GB available
21.5-inch
Late 2009
 
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