I'm single-step debugging in IDEA and it is so painfully slow as to be almost useless!
I spend a lot of my time waiting for "Collecting data..." to finish.
I don't know what the problem is but it is but I'm hoping someone can help.
IDEA 5 was also slow on my linux box but not so on my Windows XP box.
Operating system is
Linux 2.6.17-1.2187_FC5smp #1 SMP Mon Sep 11 01:32:34 EDT 2006 i686 athlon i386 GNU/Linux