Comment 4 for bug 58008

Some experimenting by copying files from the old (broken) profile to the new (working) profile leads me to believe that the training.dat file was the source of the problems. It would make sense that the freezing was happening at the same time as the junk mail controls were being applied.

When I copied training.dat into my thunderbird profile folder, the same errors occurred again. Deleting the file made the error go away, which leads me to believe that if I had simply deleted training.dat in the first place from ~/.molzilla-thunderbird/*.default/, I would not have had to delete my profile.

Faulty training.dat attached.