From: Rik Wasmus
Date: December 2 2011 3:16pm
Subject: Re: Question about deleting data and the undo log
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> Does "drop table" use the undo log (rollback segment) to temporarily store
> records to be purged later, the way "delete from table" does?

As 'DROP TABLE' causes an implicit commit 
(http://dev.mysql.com/doc/refman/5.5/en/implicit-commit.html), I would highly 
suspect that it doesnt. You cannot roll it back...
-- 
Rik Wasmus