Well, it turns out I wasnt running SP4...  So somewhere along the line this little issue must have been fixed.

That'll teach me not to patch my servers!

Well that is very very odd...

My first result set is:

1 1

1 1

1 1

with the second result set being:

1 1

1 2

1 3

What version / service pack are you running?  Im running SQL 2000 Ent (although as imentioned...