TS3230 why does my mac stop responding

All of a sudden my mac stops responding, no matter what browser I am using, I have to restart it and its fine for awhile and then it happens again
Any suggestions about what i can do ?

Make sure all of your browsers are updated?
If you have any devices connected to your computer, disconnect them to see if your browsers are still having problems.  If not, it's one and/or all of your devices that is not compatible and/or needs updated drivers to work w/ML.
Repair permissions and restart your computer afterwards.  Last resort is to run the "recovery" option.

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