So I'm running a dual monitor setup with my new iMac, the 2nd monitor is a fairly new LG E2241 connected with a Mini DVI to HDMI cable via the Thunderbolt port. Here's the issue, everytime I go to "wake up" the system after a prolonged sleep period the iMac starts starts up fine but the 2nd monitor remains in sleep mode as if it wasn't even connected. The iMac actually reverts back to a single screen setup too. The only way to get it to wake up its to disconnect and reconnect from the TB port. I could turn off the sleep feature but I really don't think that's a good idea, so my work around is turning off the iMac between long periods of use. Is anyone else having this issue with their dual monitor setups? If so were you able to fix it or know if this issue will be resolved with an update or patch? FYI, I never had this problem with my mid 2010 MBP connected to this same monitor for over a year. So I'm suspecting this is a TB issue. Thanks in advance.