In short:
I’m having trouble keeping my server up as it randomly starts spawning tons of PHP processes for no reason whatsoever. There’s a screenshot of this a bit down. The result is in fact simple: The server dies and needs a reboot. The issue is still ongoing and I’m still trying to fix it. So if you end up seeing my site (or any site hosted on this VPS for that matter) go 404, feel free to ping me, so I can reboot the box

In long:
I have been looking into the issue together with friends and even my hosting provider, but nobody was able to figure out was going on. I keep monitoring the server as long as possible but at some point the server just goes berserk and starts spawning PHP processes which consume all of my memory. The next thing is the OOM-killer killing every other process in the server to free up memory, which results in an unresponsive server… The last thing my Terminal window can show me is the insanity going on before the SSH daemon is sacrificed in order to free up some more memory (to no avail I might add).

If you have any clue how I can find out what is causing this: Feel free to mail (i-at-noCreativity.com) me, Twitter @reply / DM me, call me on my cellphone (if you’ve got my number), or even break in into my home and leave me a note with the solution on the table, because this has been going on for almost a week now and I’m desperate for a solution!

I have been Googling along all week. There are a few people out there having the same issues, but nobody seems to be able to actually solve it.
Having said that: Sorry for the inconvenience (if any) and I hope to fix this soon (because I want to share more cool shit with you guys & gals!)