Forum Problem with tag system
 

Hi all, i using vbulletin 4.2.0

When i show processlist MySQL, i see so many query from table tag, and my server alway overload

Code:
select tagtext as iid from tag where tagtext regexp "^(&[\#\da-z]*;|[^a-z\d])*(&[\#\(?|?|d)a-z]*;
What's this? Please help me solve this problem, thanks so much!
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