BTW, you can't change your password in the database in any obvious way since what's stored there is a hash value and you'd have to know the correct value. The only way to do it is to enter the hash of a known password or create a separate install of the same version of MODX, set the password, and copy the password and hash from that site's DB to the one where you're blocked.
Also, if you clear the blocked status in the DB, it won't take effect unless you also manually clear the cache by deleting the cache files.
As Frogabog says, you're only blocked for 60 minutes unless you've changed that value in the Manager.
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PLEASE, PLEASE specify the version of MODX you are using . . . PLEASE!
MODX info for everyone:
http://bobsguides.com/modx.html
[ed. note: BobRay last edited this post 14 years, 6 months ago.]