I used to run Ubuntu 12.04 with Vmware on my macbook pro 13 inch (9,2). Yesterday I installed Ubuntu 13.04 with dual boot with rEFit. I started facing over heating problem while running Ubuntu even on very low loads (for example fetching mails through thunderbird). I installed macfanctld which solved the over heating problem but now the fans are making a lot of noise. They keep on running all the time on high speed. Can anyone tell me how to fix it ?