Quite a minor display issue I know but since it's not to do with the theme I'm using (as it was ok pre-upgrade to 3.0) I'm not sure which file I need to tweak in the WordPress core files.
After upgrading I've noticed that categories are displayed without spaces between them, for example:
Filed under: 1990s,downtempo,drum'n'bass,electronica @ 10:25 am
Alternatively you can view a small screen dump here or just view the front page on my blog. The same thing happens when viewing single posts as well. Which file do I need to insert the space into? Thanks in advance.