epistable - 1:40 am on Sep 8, 2012 (gmt 0)
Do you have a site that attracts a lot of a particular type of user? "Java Support" is simply that- whether or not the browser reports that it can handle Java applets. I would add a secondary dimension- I would suggest Browser or OS. I've noticed similar behavior to what you're describing and they tend to be mobile users.
Hope this helps.