Hi all, I'm new here and looking forward to participate in the community. I am currently a PC user who needs a change (which Windows 7 will not satisfy), so having previously been a Mac user, I am planning to buy an iMac 21.5" in the next week or so. I read a lot of different forums and websites about the different issues with the iMac, but there remains some confusion. The one I am planning to buy is the 21.5" with the ATI Radeon 4670 card. I'm willing to take a chance with the screen noise issue, but I have two questions for those who own this particular iMac. First, I would like to know if any of you have had or most importantly still have problems related to choppy flash video playback or abnormally high CPU usage, in particular on Youtube HD. I haven't been able to test this in stores which only have on display the base model w/ the 9400 (which worked fine even with 1080p flash videos, but since it may be graphics card related I prefer to ask). Second, I was wondering about the flickering issues on the 21.5" iMac. I know the 27" now has a 2-week delivery delay likely due to problems with the screen, but does the smaller screen also has such flickering issues? More specifically, I plan to often use the iMac at or near it's lowest brightness level so I feel like I'm not staring at the sun at night ! Although, my current monitor's lowest brightness may not be the same on the iMac. Thanks in advance for your help!