I have discussed this on the Pmail mailing list, where Brian Fluet has duplicated the same problems that I am experiencing. I am logging this on this forum in the hopes that the Pegasus developers will note the seriousness of the situation and fix the bug.
The problem is as follows: When opening an IMAP folder that is "fairly large" (ie. usually hundreds of messages), Pmail will open a blank window, and not display any message headers. When you try to close the window, Pmail will hang, then crash after several tens of seconds. This occurs with v4.63, and has been doing this for quite a few previous versions. This occurs on Windows XP 32-bit and Windows 7 64-bit. I have not tried it on other versions of Windows. This happens both with Linux IMAP servers and with Windows Exchange. Whenever it happens, the Folder Info... for the folder shows either 0 or 128 bytes in the header cache,
What may be helpful in tracing down this problem is that I have found a consistent way to force Pmail to correctly open the offending folders. The steps are as follows: 1.Open the folder in Thunderbird. 2. Move all but 20 messages temporarily to another folder. 3. Close Thunderbird. 4. Open the folder in Pmail. It will open normally. 5. Verify that the header cache (Folder Info...) contains more than 128 bytes. Normally it will have about 3k bytes at this point. 6. Close Pmail. 7. Open the folder in Thunderbird. 8. Move the rest of the messages back into the folder. 9. Close Thunderbird. 10. Open the folder in Pmail. It now opens correctly!
However, after a time, if more messages are added to the folder, it will again no longer open correctly. If you look at Folder Info... there will be 128 bytes in the header cache.
Also, if, when an IMAP folder does open correctly, you clear the header cache, it will now no longer open correctly.
Please somebody make sure the developers log and fix this bug. It is extremely annoying to have to use Thunderbird to access my folders. I would have already abandoned Pmail because of this, if I didn't find it even more vexing to make the change. I have been using Pmail since DOS days in the early 90's. I would be most grateful if even a patch was released just to fix this bug.
Sincerely,
John Dudeck