More often than not my log-files contain information from other applications, mainly games like Counter-Strike. It's the games configuration files that appear in the mIRC-logs and sometimes information from ZIP archives. In a few cases the text found in the log-files is totaly unreadable.
This is quite irritating since the files sometimes contains so much crap that the filesize exceeds one gigabyte, making it impossible to open them with any application currently on my computer.
Is this a known problem and does anyone know how to take care of it?

Thanks in advance.