My apologies if this is not to be considered as a bug, as it is probably more bound to ATI's weak linux support, but I thought it might be interesting neverthless.
Blender produces stranges artifacts on texts and dotted lines (see annexed screenshot) when running on Linux (ubuntu/dapper amd64) on a hp notebook equipped with a radeon xpress200m, tested with 3 last fglrx driver versions. This happens with 64bits and 32bits versions of blender that use the ati opengl lib, including 2.41, 2.42 and compiled by me from recent cvs. Statically (mesa) compiled versions don't present the artifacts.
The interesting thing is that this doesn't happen in windows that use "International fonts", basically, all the newest or recently modified window types (nodes, buttons,...). The older ones (3d viewport, file dialog, sequencer,...) don't seem to make use of the international fonts option and present the artifact.
The dotted lines that appear when you rotate an object are also displayed "exploded", just like text.
Again, sorry if this is not the right place to report this problem.
Cheers
Yorik
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We really appreciate such reports, it keeps us aware of all differences in driver/3d card setups.
Unfortunately it's really an opengl driver problem, and in this case it's lack of support for glBitmap(), a very common opengl 1.0 compliant function to draw bitmap fonts.
Dropping glBitmap altogether would be really a problem for Blender...
I am not a linux user, and dont know 'fglrx'... but I do know that ATI releases their own drivers, but also the DRI team does that. Did you test both?
(Moved report to our opengl section)
This is a generic request to test your bug report and see if it is still an issue in 2.5alpha2 if so please let me know by making a comment in this report ie 'also in 2.5alpha2' and I will add it to the 2.5 bug list.