I set up a new VPS server last night with Debian + mysql + lighttpd to host all my php stuff (which so far has been on a shared hosting server, which is horrible).
Now this wordpress is running on the new server (Serenity) and it’s alot faster, and I’ll be moving 4-5 other wordpress installs over to this new server in the next couple of days.
That way I can do complete wordpress backups automatically for all wordpress installations and a full mysql dump automatically 
My cute little server Defiant, where I run my webserver, database and trekwar server tests, deserves some recognition:
The server itself is a little aopen cube shuttle pc running fedora linux
The server is of course covered with Star Trek ships, a Robotech VF-1, oldschool Batman and a badger for good luck. The server is starting to get old 4-5 years, and if it where not for backups, I would frequently worry about hard drive failure. Before that happens, I hope it will reach the 1000 day uptime
I’ve been trying out Mozy for backup for a while (the free version limited to 2GB of storage).
I recently upgraded to the mozyhome edition, it’s only 5$ each month for unlimited storage, but only for ONE computer.. And since I’m cheap and there is no Linux client, I just mirror the things from the server I have to back up in a directory on my windows PC (SVN repository, postgres database, web server config/logs/etc).
Uploading the initial data (22 GB) took around 3 days, but the incremental backups are much quicker.
I like that Mozy stores several versions of the file, so I can roll back to a specific date. They only save the different snapshots of files for a month, but for the important stuff I have SVN which lets me do unlimited rollbacks anyway.
update April 27th 2009
I recently managed to corrupt a 30 MB file and had to restore it. unlike the upload of the data, restoring it (downloading) was extremely fast, got around 6 MB/s download speed