i wasn't sure where to put this. it's sort of a bug, but only if you care if your pages are generating valid xhtml. i suppose it could also be a feature request.
while testing 1.2.7 with my theme i saw that pages weren't validating if there was a $css_class_active printed in the menu. looking at the code i saw that it was printing something like:
``
with a double space after the a and no space between the class and the address. after changing the beginning of lines 197 and 199 of print_album_menu.php from:
`$link = "