Fixed a bug: in contrary to what was said in the manual, in a locking read InnoDB set two record locks if a unique exact match search condition was used on a multi-column unique key. For a single column unique key it worked right.

Fixed a bug: If you used the rename trick #sql... -> rsql... to recover a temporary table, InnoDB asserted in row_mysql_lock_data_dictionary().

There are several outstanding non-critical bugs reported in the MySQL bugs database. Their fixing has been delayed, because resources are allocated to the upcoming 4.1.1 release.