Problem solved. Thanks for all your help.
It turns out that a lot of freeware so-called "fixed width" fonts don't live up to their name (even if they just gets misaligned by a character or two on a whole line). I ended up using good old courier instead, and that works like a charm. But I'll be on the lookout for a replacement as I'm not sure of the legality of using Windows fonts. I also experienced one font that crashed the game when displayed, but strangely enough only at certain font sizes.
It turns out that a lot of freeware so-called "fixed width" fonts don't live up to their name (even if they just gets misaligned by a character or two on a whole line). I ended up using good old courier instead, and that works like a charm. But I'll be on the lookout for a replacement as I'm not sure of the legality of using Windows fonts. I also experienced one font that crashed the game when displayed, but strangely enough only at certain font sizes.