Have I read the related troubleshooter articles above before posting (which pages?)? yes
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Joomla! version: 2.5.11
PHP version: (unknown) 5.3.x
MySQL version: (unknown) 5.1.x
Host: (optional, but it helps us help you)
Admin Tools version: 2.5.5
Description of my issue:
I noticed that admintools was taking a long time to load, and pulling the security exception list took forever. due to some brute force attacks, the exception log table had grown quite large (it's also been operational for quite some time). the delay on the main admintools page was probably due to the new charts that are generated.
I manually pushed records prior to this year to a log_archive table in order to reduce the size of the main log table, and that solved things. but I think it would be worthwhile having a built in archive feature, or some kind of retention rule that can be setup, as that table will grow indefinitely (and steadily) over time.