collapse + expand screws up panel

[Greg Fall <gmf dweezil dynip com>]

I just installed the RHAD RPMs on a laptop and on a desktop machine. 
Huugely impressed.  So here's the trouble:

On the laptop, if I collapse then expand a panel, it is redrawn badly;
e.g., a button here and there will have several right-hand-side borders.
Some things are fixed if I pass the cursor over them, others are not.
Everything gets repaired if I change the panel's position.  On the
desktop box, no such problems.  I would guess the difference is the
different X servers running on the two, but I thought somebody would
have an idea for dealing with it.

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