Code:
grep testrelease.part4.rar xferlog
I'm almost sure user1 wasn't the only one to upload it and that those 2+ users uploaded it at nearly the same second.
webManx: not really. ioB checks the file, it's valid and so it leaves it unmodified. Files disappear for a reason I'm still unable to explain fully when 2 or more users upload the same file at the exact same time. Somehow they can do that but there's a conflict between the two files and ... kaboom!
If anyone can provide me detailed information about this, I'm interested.
When I'll have some free time, I'll try to reproduce it on my own with different configurations.
Using XDUPE and denying overwrite & resume helps a bit btw.