vBulletin code question

[sturdevk]

Thanks, Dismounted, I have another related question, when a user is trying to delete his post, I noticed that forumcache string and usergroupcache string both get saved to datastore table.
95 Query REPLACE INTO datastore
(title, data, unserialize)
VALUES
('usergroupcache', 'a:10:.................)

95 Query REPLACE INTO datastore
(title, data, unserialize)
VALUES
('forumcache', 'a:17:{.................)

then how can we deal with two users deleting their posts at the same time. it maybe a concurrent issue, is it?

Thanks,