LOCK TABLES + DELETE from tbl_name never removed locks properly.
Fixed problem when grouping on an OR function.
Fixed permission problem with umask() and creating new databases.
Fixed permission problem on result file with SELECT ... INTO OUTFILE ...
Fixed problem in range optimizer (core dump) for a very complex query.
Fixed problem when using MIN(integer) or MAX(integer) in GROUP BY.
Fixed bug on Alpha when using integer keys. (Other keys worked on Alpha.)
Fixed bug in WEEK("XXXX-xx-01").