I thought I would report that I have encountered exactly the same
problem using Thunderbird 2.0.0.16 (20080708) with Mail Redirect 0.7.4
and Talkback 2.0.0.9 add-ons installed.
Interestingly enough I was using exactly the same RSS feed but found
this submittal by searching on the error message.
I should know better about giving full details. The file system is NTFS
on RAID 0 with an Intel 82801ER SATA RAID controller
Some other details that might be helpful:
OS Name Microsoft(R) Windows(R) Server 2003, Standard Edition
Version 5.2.3790 Service Pack 2 Build 3790
Other OS Description