How do I virus scan/search for malware on my macbook?

My macbook is running very slow, I've done a repair disc connections, and I have 50 gig free space on the harddrive. I think I might have a virus or downloaded some malware or something. How do I do a scan?





Thanks.|||Lots of companies do antivirus for Macs, the one mainly touted is:


http://www.sophos.com/en-us/products/end鈥?/a>


In the link below there is a free one:


http://www.iantivirus.com/


Other advice may be gained from the link below:


http://uk.search.yahoo.com/search?p=anti鈥?/a>


And yes, they they can get infected and the more popular they become the more the risk.


However the threat is minimal even with Windows if you have a good firewall and security system.


Regards, Bob.|||Well, for starters, you forgot to tell what MaBook, and what version of OS. That's kind of important. My answers is for MacBook 2010 2.4 GHz, OS 10.6.8



As to jesus there, what does your computer slowing down have to do with someone else's computer? He is a brilliant PC geek, so I'm sure he can explain it.



For my "Best Answer" over-view of Mac and viruses, see http://tinyurl.com/6db6c4z

Any "anti-virus" app can scan for any type of malware. Go ahead and try it, no harm will come, but no improvement will come either. Same for what you already tried -- I think you meant "Repair Disk Permissions". Nothing about permissions errors can slow the computer. It will simply stop some activity. Think of permissions like a lock on a door. It doesn't make the door open slowly. "Repair permissions" is the most wasted advice in the Mac OS world.



Your issue: "running very slow". What part is slow? Startup? Shut down? Launching apps? Applying filters in Photoshop? Web browsing? There are specific solutions for specific issues. Continue for the issue "everything is slow".



For slow performance, you started in one correct direction: checking available HDD space. Don't just look at the total GB available. You have to figure the relation between available and capacity. Ten percent is the minimum needed.



Remove Login Items, and restart.



The next hurdle is the toughest.

-- Boot to the Mac OS X Install DVD.

-- Go past the language choice.

-- Open Disk Utility.

-- Select the "Macintosh HD".

-- Select the "First Aid" tab.

-- Click the "Repair Disk".

-- If it finds any problem, repair again.



If Disk Utility found no problems at all, try a new admin user. System Preferences %26gt; Accounts. Click the + sign. For "New Account", click the drop list and change it from "Standard" to "Administrator"...blah blah. When done, quit System Preferences, log out, log in as the new user.



If none of this helps, boot to the OS X DVD and install.|||Viruses / malware don't attack Macs. It's to do with the way you log in, and that the majority of computer users don't use Macs.