Nice to know that you guys are on top of it. By the way, the following update page, whose link is given in the "Please try again" page, is not updated at all. The last update listed there is from 2009:

http://www.wikidot.com/current-problems

Thanks for taking care of this issue, and good luck with everything!

Michal, what the heck is going on with my site?

That was my test account so I meant to post with this one. What is going on with my site, all my downloads are gone!!!!!!!!!!! WTF!! Do you uderstand how critical this is to happen today of all days! My sites core feature is the photoshop downloads, now what the hell am I supposed to do???? Almost every single form data .zip upload will not upload or downlload!!! I know other sites aren't that much of a priority like my site is. I should be getting almost 200,000 hits today, but I'm not now because this happened! Now my site rank as well as it's popularity is going to go down because of this. Do you know how many people view my site everyday as well as bringing a sh** load of unique visits to wikidot. I'm busy every day now because of my site, now what is going on??

Why on earth Wikidot does not use fault tolerant architecture? Should we move some critical files outside wikidot?

All the files are securely hosted on Amazon S3 and we only cache them locally. All the "missing" files are stored fine in our S3 bucket. We are trying to find out why the hell they are not being downloaded and served by our servers.

U said "No data is lost except for file uploads from the last half hour before the crush." In fact all my data uploaded one - two - three - and so on weeks ago are lost . They are very critical as contain some important scripts. Thinking to move from Wikidot..

Please check again — ALL files should be back. If they are not, we still have backups, but I can bet they will not be necessary.

I know how frustrating such situations are. For all of us. But things DO happen — no matter how redundant the infrastructure is there is always place for errors. Definitely there are still things we can work on.

People, check your websites and give us feedback if things work as expected. We will highly appreciate it!

The problem seems to be solved. Everything is back. What was that? As i got is you relay files stored on Amazon Cloud? Should we expect something similar in the future? Need to know as I have to make decision.

The last problem was with improperly cleared memory cache (Memcached) — our file caching servers got outdated information which files should be proxied on our disk, but when not finding them they were throwing errors (we had to start the file cache from zero, copying everything from S3).

Now it seems Wikidot is 100% up and running. I owe you huge apologies — I hope you will accept it!

Plus this had to happen when I release something HUGE on my site!!

Matt, they don't do it deliberately to spite you! And yours is not the only site that a) was affected and b) is critical to the people that run or use it. I had the Scottish Government on the phone several times today being a bit unhappy that their sites and the databases we deliver through them were down. In the UK we have a saying that stuff like this is Sod's Law; in other words it always happens just when you really really need Wikidot to work well. With me it's usually when I am doing a presentation about how good Wikidot is!

But this happens with any platform, hardware and software from time to time. The important thing is whether Wikidot is responsive when it comes to fixing the problems. And I think they are.