Dirk,
Don't get me started on Edge. I notice that Mentor Graphics doesn't have a community set up on their forum to discuss edge. Gee, I wonder why.
Too expensive
Slow loading
Slow debug stepping after a few debug cycles
Memory Leaks
Crashes just as you're getting close to the bug
Variables with unknow values
Variables with incorrect decoding
Intermittenly grayed-out memory window
...
But this probably isn't the place to discuss it.
Happily moving away from Edge,
Rod