This is what I don't like I mean all my family pictures, anything personal on it is all game to be snooped on when taken in for repair right? Is there anything that can be serviced by yourself or is it to complicated and/or void warranty?
I see from the replies a lot have broken down in a few years hmmm
Exactly (re security issues).
I managed to use a MBP to access the iMac's hard drive via Target Disk Mode and I formatted it (zeroed out - where you write zeroes over the entire HD so that data cannot be accessed again) before it went away for repair.
Of course ... make sure you make a full backup before you do this.
I know you can upgrade RAM in iMac's without voiding the warranty but good question ... I'm not sure about where you stand if you open up the machine to perform any repairs? However, if you are in warranty I would definitely get a qualified person to undertake any repairs as it can be quite tricky (search YouTube for iMac repairs ...).
Like I said in my post ... I'd much prefer a Mac Pro, solely for the reason of future repairs, but the machine is waaaaaay out of date!
I have also/am considering going down the Mac Mini route but they only have integrated graphics (and do not even come with keyboard & mouse - is Apple having a laugh??) but with the iMac you get so much more bang for your buck.
I love the iMac, I really do (was my first Apple product ever, and introduced me to the brand) but the all-in-one aspect really concerns me, especially as mine has had to go in for repair on two occasions, and on the first occasion it had to go back to the repair company 5 times in total due to errors during the repair process!
What are you going to do? Are you going to get one of the new iMacs when they are released?
As much as I hate to say it, I am seriously considering it ...