Attachment error
 

Firstly i m sorry for my bad English.
i can attach 2-3 files that exceed 1mb.For example if i want to attach one file that exceed 1mb i get an error like that.
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There seems to have been a slight problem with the example.com database.
Please try again by pressing the refresh button in your browser.

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We apologise for any inconvenience.
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If im understanding you correctly, your saying that your trying to upload over 1mb files to your forums. And its giving you errors? If thats the case, you need to contact your host and ask them to up the MySQL Packet Size. Same thing happen on my site along time ago

i contacted them this problem is not about that. But i m trying another thing. i think i found. i move attachments from database to filesystem and it s solved. but how can i delete them from database now? i dont know about optimizing tables.

If you completed the move to filesystem, thos attachment are automatic removed from the database.