MyBB Hacks

Not even with the newest MyBB? Maybe your server doesn't have the limits where it limits queries to 15 seconds, since I'm on a shared host?

It doesn't matter what the limits are because queries are taking nowhere near 15 seconds.
I don't have the latest MyBB but I'm doubting that's an issue.  You can try reinstalling the plugin to see if there's any effect.

If you can give a step by step reproduction guide from a clean forum install on how to reproduce, I can look into it, otherwise there's probably an issue with your server or setup.

I´ve got several 'server 500' errors too, just after upgrading to 1.6.4 and disabling this plugin fixed the errors, Zinga

After the last upgrade the forum itself is pretty fast, but if it´s possible to make it compatible again is always good to have some performance tweak

I cannot reproduce any such issue on a localhost MyBB 1.6.4 install unfortunately.

Tried doing a diff between some files from MyBB 1.6.1 and 1.6.4 but can't identify anything that'd particularly cause a 500 error.
If anyone can provide a step-by-step reproduction guide on how to do it, I can investigate, but otherwise, unfortunately, I can't figure out what the issue may be.

How did I never notice this plugin? Great plugin Zinga! I'm going to install this one next Monday or Tuesday and will let you know if I get that error

Zinga,

some users are reporting some errors on my forum that appear to be caused by this plugin.  When disabling it, 1 user in particular stops seeing the error he was having, but after enabling it again, to confirm, the user immediately begins receiving the errors when trying to view a particular thread.

The error that has been reported is this error:
"[an error occurred while processing this directive]"

I posted about this on the community site here:
http://community.mybb.com/thread-103705.html

here's the initial help thread someone started on my forum:
http://damnfineshave.com/thread-why-do-i...http://damnfineshave.com/thread-why-do-i-keep-getting-th

and here's a thread where a forum user named "freddy" on my forum was continually having trouble viewing page 2:
http://damnfineshave.com/thread-gillette...http://damnfineshave.com/thread-gillette-7-o-clock-super-platinum

finally, here's a list of activated plugins on my forum:
Auto Media (1.1.9)
Contact Form (3.1)
Fit on Page (2.3)
Google Analytics (1.5)
MyBB GoMobile (1.0)
Goodbye Spammer (0.1.2)
Google SEO (1.6.1)
UserGroup Legend On Index (1.1)
* imei Page Optimizer! (1.0.1)
Login Password Conversion (1.0)
NotifyMovedThread Plugin! (0.1.1)
Show the users that has been online today (2.0)
PluginLibrary (4)
Registration Security Question (1.1)
Settings Cleaner (2.0)
Simple Captcha (1.6)
Trash Can Forum (2.0)
XThreads v1.46

I have no idea about that one.
Probably server configuration / host issue.

hmn, I enabled this plugin on another forum I admin and some users are reporting the same "an error occurred while processing this directive" error when trying to go to the 2nd page of a thread.  both the current forum I admin and the other one I used to run and had this same error on were running on host monster's shared hosting.

any recent ideas, Zinga?

Nope.