I wonder if you can help me. Since I "switched" to an iMac last year, I have been making a lot of DVDs. At first everything was great, but over time, my DVDs have become increasingly unreliable. They seem to burn successfully, but these days they are often unreadable. I don't think that this is a problem with my DVD player, because it can read all of my earlier discs, and even the iMac has difficulty reading the problem discs sometimes. I've tried a variety of different makes of DVD-Rs, but without any difference. It may be my imagination, but my problems seems to have got worse since I upgraded to the iLife suite. Has anyone else had a similar experience ? Could this be a hardware problem (hard disk too fragmented ? damaged Superdrive ?, etc). Any advice would be greatly appreciated, because as a Switcher, I am beginning to feel very disillusioned. Many thanks in advance !