https://bugs.freedesktop.org/show_bug.cgi?id=35998
--- Comment #8 from Milan Plzik emempi@gmail.com 2011-05-07 05:57:44 PDT --- (In reply to comment #7)
It looks like only the very thin characters misrender.
I'm not sure whether this is width-related; I see misrenderd also 'S', 'v', '2', and some others, and I believe (but unfortunately I don't have a screenshot) that under some circumstances, the set of affected glyphs changes.
Unfortunately, I don't have RS600.
If it will be of some use, I can test patches, do some basic debugging, or provide remote access to RS600 machine.