Hi, this problem is a little old but in the 3.0 is still unfixed.
When you activate the log option in mirc the time value is double posted in all status message like, join, part, quit, mode change, kick, topic, etc
example:
[8:02pm] <deviryuu> Yes
[8:02pm] [8:02pm] oniiii (~RAWr@3C7A6DD4.D193563C.2100A722.IP) has joined. «850 people»
i use a statistic program and this double time screw the read of values
regards