i have also nocited that online usersblock when click on username for the popup menu it goes off the page rather than popup to the left to stay on the screen
I've hotfixed the menu issue I believe - if you re-download and re-upload /dbtech/vbshout/clientscript/vbshout.js then do a hard refresh (Ctrl+F5 on all browsers except Chrome) you should see that working
The resource usage issue still exists on your forum though, let me know if you want me to look into that for you