WP bug / WP – SQL data pulling error

I am one of the WP hardcore users and I am developing themes for WP since version 1.5. But once in a while, after upgrading to new WP versions, some errors occur. Most of them are resolved in a short time.

Now here’s the problem: I have my own custom theme written on my own keyboard, I don’t use more than 10 light plugins, so /wp-content/ code is not the cause.

The thing is, a few times a day, the database connection basically dies. What do I mean by that? The WP install IS connected to the MySQL database, but no data is shown on the blog nor in Dashboard.

Now, if it were a database connection error, there should have been the traditional “Couldn’t establish a database connection” error. But it’s not there.

First, I thought it’s my server. I asked for the guys at the hosting company to check it out, they found nothing wrong, no SQL connection dropped whatsoever. So there has to be a problem in the WordPress core, but I have no idea where exactly.

Second, the same problem occured a few days ago on a different blog hosted on a “space-rocket-speedy” server (it belongs to a huge media outlet). I thought they only had a small server issues, as media outlets have once in a while, so I didn’t bother too much. But today, doing some maintainance work (removing a banner from a sidebar, lol), I got the same error once more, this time on a third blog.

Now, they say if one tells you that you’re drunk, ignore him, if two tell you that you drank to much, stop drinking, but if three tell you that you had enough, you should go to sleep. It’s already the third case I’m dealing with and it’s not the database connection. It never dropped on neither of the three blogs, each located on different servers with different sysadmins workign on them.

Any ideas?