I tried deleting the summary and summary-meta files as described above hoping to get filtering to work with Gutsy. Unfortunately, not only did the filtering remain broken, but now my mails were out of sync with the server. Everything I'd received since yesterday was gone. I could not get it to re-sync. The only thing that worked was putting the old summary and summary-meta files back that I'd deleted. So the message is:
I tried deleting the summary and summary-meta files as described above hoping to get filtering to work with Gutsy. Unfortunately, not only did the filtering remain broken, but now my mails were out of sync with the server. Everything I'd received since yesterday was gone. I could not get it to re-sync. The only thing that worked was putting the old summary and summary-meta files back that I'd deleted. So the message is:
DO NOT DELETE SUMMARY AND/OR SUMMARY-META!