mattlock

This error can be caused by a few different things. To eliminate the possibility of a corrupt WU, delete the work folder and restart F@H. It will then download a new WU. If the problem still occurs, it could be hardware related (overclocking, memory errors, etc), page file issues, or lack of disk space.

Keep us posted.

EDIT:
Upon further review, this seems to be a common problem with the 2620 WU. On top of deleting the work folder, you will also need to delete the Queue.dat file and unitinfo.txt file to completely purge the WU and get a new WU.