I recently downloaded the most recent version of RubyMine (2.0.2 - build 93.202).
Unfortunately, I have found a tad bit difficult to use. The problem is that the left gutter keeps changing size when editing *.html.erb files, especially the style properties. This results in the entire text editing area flicker. I alos noticed that a little eye pops-up in the right gutter (right in the colored analysis box) just when this is happen.
As it stands, I find the IDE real difficult to use.
Is there a fix for this? Finally, if it helps, I'm running Mac OS X 10.6