Login Error on Movable type

It had come to my attention that comments on my Blog were not being accepted.

Wanting to figure out the problem, I tried to logon, but I was unable to logon to my Movable Type account. It gave me a 404 error -- file not found.

It seemed as though mt.cgi was looking for the mt-update.cgi file, which I had deleted after my previous update, version 3.33. So I uploaded said file, but then it told me I could not logon.

I feared for the worst, but could think of a few possible causes:
1) The rental server I use is upgrading
2) The database file (DB) is corrupt
3) Memory overload

So I first checked out the Sixapart Movable Type Knowledge Base.

http://www.sixapart.com/movabletype/kb/authors/invalid_login.html

One thing it mentioned was that Berkeley DB database is prone to server upgrades.
http://www.sixapart.com/movabletype/kb/databases/converting_berk.html

I couldn't do anything on the server since telnet is not provided, but I was able to login after a while. It seems as though it was a server upgrade.

But I saw this as a good time to change the database file to MySQL. So got a MySQL account from the provider, used a script to change the db files to sql files and was up and running in no time. Since MySQL files can be kept in a different place than the DB files (which are in the same folder as the mt.cgi file), I see this as an advantage.

Just in case there are any more problems in the future, I will try to backup more often...