Shorten your logs file. UO Journal Shortener remove lines matching patterns from a given log file.
The appllication was mainly designed for Ultima Online "journal.txt", but it could be used for any logfile that contains lines matching a regular expression that you want to remove (in this case you need to modify the cfg file in the archive.)

Requirements:
* Java

The license of this software is Freeware, you can free download and free use this file converter software.