I have a serious problem with my forum, and it seems related to vbseo.
I have posted 10 messages to the support, but without success. I have still my problem.

Maybe some would have an idea and could help me.

Before to start, here the main plugins I use:
- Media Library
- AME 3
- vBSEO

I'm using the Media Library custom rewrites, I have justed
added the videos word (not media):

Code:
'^media\.php\?do=tag&tid=(.*)$'=>'videos/tags/$1/'
'^media\.php\?do=details_edit&mid=(.*)$'=>'videos/edit/$1/'
'^media\.php\?do=tags_edit&mid=(.*)$'=>'videos/tag-edit/$1/'
'^media\.php\?do=comment_edit&cmt=(.*)$'=>'videos/comment-edit/$1/'
'^media\.php\?do=category&cid=(\d+)&title=(.+)$'=>'videos/cat-$1-$2/'
'^media\.php\?do=details&mid=(\d+)&title=(.+)$'=>'videos/$1-$2/'
'^media\.php\?do=user&uid=(\d+)$'=>'videos/user-$1/'
'^media\.php\?do=faves&mid=(\d+)$'=>'videos/love/$1/'
'^media\.php\?do=report&mid=(\d+)$'=>'videos/report/$1/'
'^media\.php\?do=search&query=(\d+)$'=>'videos/search/$1/'
'^media\.php\?do=letter&query=(\d+)$'=>'videos/letter/$1/'
'^media\.php\?do=(playlists)$' => 'videos/$1/'
'^media\.php\?do=playlist&pid=(\d+)$' => 'videos/playlist/$1/' 
'^media\.php\?do=details&mid=([0-9]+)&pid=(\d+)$' => 'videos/details/$1/playlist-$2/'
'^media\.php\?do=playlist_edit&pid=(\d+)$' => 'videos/edit/playlist-$1/'
'^media\.php\?do=random$'=>'videos/random'
'^media\.php\?do=submit$'=>'videos/submit'
'^media\.php\?do=browse$'=>'videos/browse'
'^media\.php\?do=tagcloud$'=>'videos/tagcloud'
'^media\.php\?do=favorites$'=>'videos/favorites'
'^media\.php\?do=subscriptions$'=>'videos/subscriptions'
'^media\.php\?do=admin_host_edit&sid=(\d+)$'=>'videos/admin/edit/$1/'
'^media\.php\?do=admin_host_delete&sid=(\d+)$'=>'videos/admin/delete/$1/'
'^media\.php\?do=admin_host_export&sid=(\d+)$'=>'videos/admin/export/$1/'
'^media\.php\?do=admin_(\w+)$'=>'videos/admin/$1/'
I also use the following custom rewrites:
'^forum\.php$' => 'forums/'
'^media\.php$' => 'videos.html' (it was videos before).

I precise, I have no directory/script and no forum called 'video(s)'


- Here is my problem:
My forums work correctly during a few hours, then a few custom rewrite links give 404 errors. (videos.html and sometimes forums/).

If I go on the custom rewrite tab and I just save rules (without having modified something), it will work again... then it will stop to work a few hours later... (the configuration has correct permissions, and the rules do not disappear of the config file )

So the support saves the rules, reload and think there is no problem, but that's not the case, you need to wait for a few hours...

After having investigated, it seems it does not work during the night. So maybe it comes from a scheduled task?

Here are the tasks I have:
Thread Views
vBSEO Search Engine XML Sitemap
'Version check' for all hacks - Cron
Generate XML Sitemap
Search Queue Updates
Automatic Database Backup for vBulletin
Infractions Cleanup
vBSEO Update Service
Hourly Cleanup
Hourly Cleanup #2
Daily Digest
Daily Cleanup

Any idea?

Regards