I have installed both IDEA (10.5 CE) and RubyMine 3.2.4 on Linux 10.04, 64-bit.
Both of them have Default settings. Both use IDEA 4.5 Default L&F with Andale Mono (12-point) font chosen.
Yet, there is a noticeable difference between their appearances. The documentation popups (Ctrl+Q) on IDEA are much more legible than on RM.
I hope this is just not me. Anything I should do to improve the L&F on RM?