I have JoomlaComment v 2.33 installed with UddeIM v0.5b on Joomla! 1.0.10 Stable [ Sundown ]. When I try to access UddeIM I get this error message:
Fatal error: Cannot redeclare showmessage() (previously declared in /home/racinnat/public_html/sandbox/joomla/components/com_uddeim/uddeim.php:1083) in /home/racinnat/public_html/sandbox/joomla/components/com_comment/joscomment/utils.php on line 23
Line 23 of the utils.php is the first line of the code, starting with: function showMessage($msg)
looks like both components are using the same function name - you should bring it to the attention of both development teams and hopefully someone will change.