[PyMOL] Pymol 1.0 graphics bug

In Pymol 1.0, the pymol viewer freezes during an mpng command in 
progress if the mouse pointer is moved. (Windows XP XP2 only, using 
Intel chips and motherboard, Nvidia graphics card and driver) PNG files 
are written out properly, and viewer window becomes live again after 
completion of the mpng command. I have verified this on two different 
systems, one with an Intel DG945CC board and Pentium D 805 with Nvidia 
GeForce 7300S and another with an Intel DQ965FE board and Core Duo 2 
E6600 with XFX GeForce 8600 GT graphics. Both machines have 2 Gbyte of 
RAM and the latest Nvidia drivers. This behavior cannot be duplicated in 
Linux FC6 using a Quadro 980XGL and a single core Pentium 4, also with 2 
Gbyte of RAM.

Anybody else notice this?

Cheers,