it seems that the last tempfile security fix breaks the facility of showing the printer queue within windows clients - after downgrading to samba 2.0.7-35 (only the samba-2.0.7.35.i386.rpm) the lpq status is visible again. will you launch 2.0.8 or even 2.2 soon?
at least in samba-2.0.8-1.7.1, but 2.0.9 should be out soon ;)