First: Thank you for an excellent addition - much needed! Automatic backups == GOOOOOOD!
Second: Bug found?
Running with LOCK off, I got these on every table:
LOCK TABLES `access` WRITE;
UNLOCK TABLES;
If Lock is turned off, shouldn't the export NOT have locks in it? It's not good if I have to manually edit out the LOCKS because I can't perform locks in my DB and I need to restore quickly from the latest backup.

Its ok - but not having to edit would be much better.
Note - this is using today's update mysqlbackup109.zip - downloaded at 12:56pm EST - about an hour and a half after your update.