Hi Guys I used to have a pretty aswesome iMac. 27', i7 with 16 GB RAM and even a 512 GB SSD. As you can tell, it use to blitz most of what I put it through. Two days ago though, for no apparent reason, it has started to crawl. It takes forever to boot up (really forever, like over 4 minutes) and it even takes about 30 seconds to open a Safari window. Sometimes, it just freezes up as well. I am at my wit's end trying to figure out this problem. Don't live close to take it to have a Genius with a blue shirt look at it. Any suggestions on what I can do about this? I can't believe this is the same iMac that I was using just two days ago!