You're not using the plugin, but the automatic fallback option of logmein - the static html version of the client. (It is easy to tell: the dinamic plugin has a black toolbar at the top, the static version is grey). If it is correctly installed (see application manager / show installed applications), please check if the plugin is enabled in your browser: menu / tools / components: there should be shockwave flash, default plugin, and logmein. If it still does not work, you can ask for help on nokia-nseries-feedback@logmein.com, they're really friendly people.