Backup your batabases w/o phpmyadmin
I often read threads about export/import data from MySQL and it's always mentioned phpmyadmin as the only way to do that (with PHP indeed).
But that's not true, and it's indeed the slower way to do that, expecially when importing large database files (because phpmyadmin has problems with large db)...
This would be just a reminder :)
Use an SSH client, like putty (if your database is on a remote server), to connect to your server and export the databse you want simply with:
mysqldump --user=username --password=1234 --databases your_database --opt --quote-names --allow-keywords --complete-insert | bzip2 -c > your_database.sql.bz2
download the .bz2 file created, unzip it using 7-zip (if you dont have any other uncompress utility), and backup your database in mysql using:
mysql --user=username --password your_database < your_database.sql
that's faster than using "import" from phpmyadmin