You mean
before they upgraded to 4.0.10
. With 4.0.10 (starting -rc2) and later these incorrect bans cannot be added. With older versions such as 4.0.9 (and before) there was a bug causing these bans to be added sometimes. In fact, you
reported one of the symptoms yourself on the bug tracker with UnrealIRCd 4.0.5 but it was so sporadic that we could not reproduce.
I'm only aware of two reports in our support channel and that one bug report. Useful module, though, I referred those two people to your mod
If you know of.. say, more than 10 reports, then let me know, so I know that I should write a bit more elaborate on the subject in the release notes. Would add another reason why people should upgrade to 4.0.10.