Foxit Reader 2.1 .Red zone overwrite

Created an attachment (id=5181)
Debuglog

Trunk.r47977
1)Download from:
http://www.oldapps.com/download.php?oldappsid=FoxitReader_212023.exe
2)Install and Run
3)Open... a PDF
4)Move up and down(clicking on the scrollbars is faster)
5)It excepts

ntoskrnl/mm/ppool.c(947): High-side redzone overwrite detected for paged pool address 0x868466f0
Tag Gla4(34616C47), Size 184, UserSize 80, LoZone 87878787, HiZone cdcdcdcd
First few Stack Frames: <8089308B> <FB37B30B> <FB3756FA> <FB375F02> <FB37616E> <80806D8F>

Full debuglog attached.