SuperDrive Spits dvd's off the desk

Question

I'm not sure if anyone else has had this problem but I'm sure others have ... I work in a apple retail store and I have had 3 other computers have this same issue .. and there all have been the first version of the Imac G5's. it seems that they have an over active drive eject problem or something. Mine seems to spit the disks out and they bounce once off the desk and then on to the floor. Now it may not be a huge deal .. but when you spend over 2 grand on a computer you expect this things to function properly.
So for the first 3 weeks I had my computer it worked fine .. then it started to act up like this.. I called apple and they took me threw the hoops and I resetting the PRAM and the NVRAM and trying to eject from open firmware mode .. I even went into yellow dog and tried to un mount from there and still it spits the disc off the desk. So they sent me out a new superdrive, after installing the drive everything seemed to be just fine and my computer was back in action.. but once again 2 weeks later this time it happened again... I called apple and jumped threw the hoops again but with no luck yet again.. now they say they i have no idea what the problem would be.
I contacted my local AASP which happens to be another store under the chain i work for and they have no idea what it might be either other than to replace the midplane...has anyone else here come across this problem
any help would be welcome
Thanks in advance

Answer 1

I have been experiencing the same problem with my iMac G5. I've had the computer since April and only began experiencing the bouncing disk problem in the past week or so. The normally quiet superdrive was getting louder and it started spitting all disks anywhere from a few inches to well over a foot out of the drive.
I took it to my local Apple Store (where I bought it) and after leaving it for a couple of days, they replaced the drive. Assuring me that they tested it, I took it home yesterday.
Well, the new drive (which is quiet) is still spitting them out as before and is making the disks unusually hot as well. A call back to the Apple Store was useless and they told me to call Apple Care.
The Apple Care rep spent well over an hour with me on the phone only to tell me that he didn't know what it was. He said this was a new problem for him and suggested that I take it back to the Apple Store and have them replace the logic board and power supply (even though they both tested well with him). He didn't commit to whether this would actually solve the problem.
I have two iBooks and an iMac G3 which have been flawless, so I've been a satisfied Apple user for years and don't know whether his suggestion makes sense. Any advice would be greatly appreciated.
Thanks!