Fences Hangs Explorer when using a Fence with scroll bar

The title pretty much says it all, but ... basically, I have one fence that  I do not want sized all the way to accommodate all the icons.  Fences therefore gives you a nice scroll bar (which even works with the mouse wheel if it has the focus).  However, more times than not, when I go to use this particular fence, the system hangs for a good 30 seconds.

This is a "DRIVES" Fence ... it DOES contain networked drives/folders too.  Could this be the cause?  I u...Image may be NSFW.
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