Hi there. I Don't now if it's really a bug or the intended behaviour but...

In my opinion, tag cloud would have to show the tags with more tagged objects for each. actually it seems a number of alphabetically tags is being showed.

maybe with an example i can explain it better. if you go to
http://share.ez.no/content/keyword/cache
you can see more than 10 objects tagged with this tag.

But in tag cloud block, tag cache is no appearing while others as 'ACL' or even 'a' appears even if there are only one object tagged with each of them.

What do you think?

Best regards.