Currently Being ModeratedFeb 26, 2013 4:08 PM (in response to msaidurrahman)
First, make sure you have adequate backups. If your hard disk is failing this could be a sign. It can be replaced if necessary, but a backup strategy is recommended whether or not you are experiencing problems.
Read: OS X Mountain Lion: If your Mac runs slowly. The article is very cursory, but be sure to read through to the end. Unfortunately the link there is broken, so use this one: Disk Utility. To do this you must start your Mac from the Recovery System or Internet Recovery.
Rather than ask a dozen additional questions about your system consider the following:
Apple Support Communities contributor etresoft wrote a very useful app to quickly gather certain system information that may help point to a cause of this problem. Go to his website, download and run EtreCheck:
Etrecheck will take a moment to run as it collects its data.
Copy and paste its output in a reply. Do not be concerned about anything that says "Problem" or "failed".
EtreCheck was designed to remove any personal information (such as your computer's name and serial numbers) but if you see anything that looks like an email address or any other personal information that should not be divulged to others, please delete or obscure that information when you post the reply.
When you are finished with EtreCheck, quit the program. It occupies very little space, and you can keep it or drag it to the Trash as you wish.MacBooks iMacs iPads AirPorts, OS X Mountain Lion, 28 years Apple!
Currently Being ModeratedFeb 26, 2013 4:15 PM (in response to John Galt)
That a a very common answer all of your suggestion i did any new advice
Currently Being ModeratedFeb 26, 2013 4:23 PM (in response to msaidurrahman)
Yours a very common question. Please read my response and reply with your results.
Currently Being ModeratedFeb 28, 2013 10:56 AM (in response to msaidurrahman)
Please read my original response and reply with the EtreCheck results msaidurrahman.
Currently Being ModeratedFeb 28, 2013 11:54 AM (in response to msaidurrahman)