I'm currently running IDEA 3.0.3. I've been working on a rather large project for a while (3500+ classes). 3.0.3 crashed intermittently when doing memory consuming operations like large code scans. I suspect the memory leak problem in JRE/JDK 1.4.1_02 so I tried to run Idea under 1.4.2beta. But I found out that IDEA no longer allows me to change the VM version to use for running IDEA. I used to change this often when using Idea 2.x. Why is this? Is there any way to go around this limitation?