Comment 34 for bug 261595

I think this is not fixed. The checks for free disk space before pop3 download are not sufficient. We may help this in bug 640371 (do not even start pop3 download if disk space is not enough for all the messages to be downloaded) and bug 789679, where we actually check free disk space on some more operations in TB. In all the checks, we only allow the operation if there still remains at least 4MB free disk space after the operation. So 4MB should be enough to rewrite the popstate.dat file.

However we still should check for free space before popstate.dat is rewritten.