I have a big problem with the editor ( running Ubuntu, 7.04 ): sometimes, don't know the cause, the sources font gets bigger and I can't revert to the original size whatsoever. Even when restarting codeblocks, the font size is the same. Lowering the font reduces the text size, but now the "8" size doesn't help since it looks like a 14 or 16 size. The only thing I can do is perhaps reinstall codeblocks. Please check this problem as it happened from the beginning ( since I was using codeblocks, that is build 43** ).
It may be related to a Ctrl+C pressing, when copying some text.