jre uninstaller does not remove plugin dlls from mozilla plugins directory

jre uninstaller does not remove plugin dlls from mozilla/netscape plugins directory.
The problem is reproducible on all windows.
1. Install jre-1_5_0_01-ea-windows-i586.exe from /net/koori/onestop/jdk/1.5.0_01/latest/bundles/windows-i586
2. Remove jre using Add/Remove Programs
3. Check C:/Program Files/mozilla.org/Mozilla/plugins dir
Results:
plugin dll's are present

Expected results:
plugin dll's should be removed

Second scenario
Plugin fails with base jre after 1.5.0_01 is removed from the system:
1. Install jre-1_5_0-windows-i586.exe from /net/koori/onestop/jdk/1.5.0/latest/bundles/windows-i586
2. Install jre-1_5_0_01-ea-windows-i586.exe from /net/koori/onestop/jdk/1.5.0_01/latest/bundles/windows-i586
3. Uninstall 1.5.0_01 and try to invoke any applet from http://sqeweb/st1/plugin-home/tiger/mimetypes/pluginhtml-default/
Plugin fails with message in the MZ/NS
"Click here to get plugin"
###@###.### 10/6/04 00:37 GMT