Hi there, I once installed Parallel Desktop 3 on my MBP. But I didn't use it that often, so I removed it. But, after removing it, my laptop became permanently slow (i mean I even formated it, and it was still slow). Now, bare in mind that, I sent my laptop in for repairment, and there was a physical damage, and the hard drive was broken. But still, I now want to install it again. I just want to know, is it going to slow down my mac? Thanks!