I've seen this happen from time to time, but I've been unable to find the exact cause. I am working on some new network code that should fix most (if not all) of these kinds of problems. Once I get it working I will release it.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Over the last few days, httpmail has been downloading new messages as blank messages. Any one else having this occur ?
I've seen this happen from time to time, but I've been unable to find the exact cause. I am working on some new network code that should fix most (if not all) of these kinds of problems. Once I get it working I will release it.