Well I have nearly the same log, but my fonts are displayed correctly. Are you sure you edited the correct line and saved the file before you closed it?
However, if this still won't work, I don't know what to do either. Maybe re-install Mesa via your packet manager (Synaptic), but I have doubts that Mesa is the problem here. According to
http://vaalnor.mine.nu/psdoc/?q=node/39, there is a 2nd solution:
Font multitexturing unsupported by current opengl git version, try the following:
Update your current version of opengl git either through your package manager or manually.
But I've looked for opengl git in synaptic and tried to get it through the terminal, but found nothing.
