I get an out-of-memory error when starting to burn a DVD in a new project. If I close the same project and reopen it, I can then burn the project.
I am running on a Windows 7 machine with 4GB RAM, with all other non-necessary processes killed. There were over 2 GB available memory when I started the burn, but MyDVD was holding onto 465 MB of it. This was probably due to the previous project which I had burned. However, I had opened a new project, and it was still taking all that memory.