http://jira.hyperic.com/browse/HHQ-2116
MySQL plugin for 5.x does'nt work properly on Win platforms for MySQL 5.1 due to a hardcoded Windows registry key:
<!-- Registry scan for 5.0 -->
<scan registry="SOFTWARE\MySQL AB\MySQL Server 5.0">
<include name="Location"/>
</scan>
Workaround: Change the registry key parameter to
<scan registry="SOFTWARE\MySQL AB\MySQL Server 5.1">
Anonymous