There appear to be two phpMyAdmin RPMs for the SME Server
Version 2.3.3 from Darrell May, dmc-mitel-phpmyadmin-2.3.3-1
http://myezserver.com/downloads/mitel/contrib/phpmyadmin/Version 2.4 (just released), from Ben Broekhuizen, e-smith-phpmyadmin-2.4.0-2
http://sme.nightspirit.nl/e-smith-phpmyadmin/There are conflicts when you upgrade from 2.3 to 2.4, but removing the earlier one worked.
rpm -e dmc-mitel-phpmyadmin
rpm -Uvh e-smith-phpmyadmin-2.4.0-2.noarch.rpm
Maybe this should be mentioned in the readme for 2.4
(I couldn't find an email contact for Ben)
The good news is that version 2.4 appears to be working well.
Ian