I have had the new iMac set up for less than 24 hours. Just within the few hours of setting it up and transferring files I've experienced: 2 never ending beach balls while adjusting networking configuration. Couldn't force quit. Had to shut down. 1 forced shut down while opening some apps - ~3 were already open and message came up saying that I would have to hold the power button down to shutdown. 2 very long beach balls - 1 in iweb and 1 in iphoto and this nightmare The iMac has a gig of RAM. Is this type of stuff normal?