Amaya 10 .1-pre2 Screen Refresh Problems

Hi,

I just switched from 10.1-pre1 to 10.1-pre2 and it's now unusable due to 
problems with the display. As you scroll up and down or try to update a 
document by typing, bits of the document appear incorrectly in 
rectangular areas in the main editing area.

This is on a Lenovo ThinkPad R61i with Windows XP SP2.

Regards,

Leon...