Codeigniter Hook Based Plugin System

[eluser]Vheissu[/eluser]
Can anyone help me out who's good at profiling PHP code and pinpointing the location of duplicate queries? I've got the list of duplicate queries down to 2 now. The issue appears to be that the same plugin is searched for in the database twice, it must be within one of the foreach loops and is currently doing my head in.

Anyone have any ideas and want to quickly help me out?

Here's what my profiler is now showing:

Code:

0.0004      SELECT *
FROM (`plugins`)
WHERE `plugin_system_name` = 'cimarkdown'
0.0003      SELECT *
FROM (`plugins`)
WHERE `plugin_system_name` = 'helloworld'
0.0003      SELECT *
FROM (`plugins`)
0.0002      SELECT *
FROM (`plugins`)
WHERE `plugin_system_name` = 'cimarkdown'
0.0002      SELECT *
FROM (`plugins`)
WHERE `plugin_system_name` = 'helloworld'