I just figured this out... it was driving me crazy. Until I figured out how to disable autoscroll, Logmein was almost unusuable. Anyway you need to disable the ActiveX addon for Logmein in IE:
1. Go to Internet Options-> Programs-> Manage add-ons->2. Disable following addons by LoMeIn, Inc: Performance Viewer Activex Control Remote Access ActiveX Client3. Restart Internet Explorer
It will disable other functionalities but I personally didn't care.