Over the past two weeks I have received two laptops that had issues where the laptop fan would run and the computer would begin to slow down. On both computers, I found that the 32 bit Java and 64 bit Java was installed. As you can see below, over 700+mb of ram was being consumed. If you ended the process, the process would restart.
Both computers were virus and malware free. The solution on both computers – uninstall the 32 bit version.