Too much long time sending post.

[uhuru]

  Since move forum from ubuntu web-server to freebsd web-server  (with convert base to RC2 format) a posts send to forum very long (up to 30 sec).  But Page created in normal time (<0.1 sec average). 
  Its only if post public in topic with many posts (20 above).  And if one reply posted, other posts will send rapidly.  Forum at all work very rapidly.
  How fix it?

[SMFHacks]

I would watch your database mysql and see if the query is taking a long time to insert the post.

SMF has issues with some topics if you have 1000+ pages I believe

[uhuru]

How it watch? 
No max posts in topic 100-200.

[SMFHacks]

I watch mine using mysql administrator connected to the mysql server then I would make a post to see if a query is taking a long time or not.