It will be now.
Today's spate of problems have been to do with caching.
Just about whenever anything is generated (a piece, any of the side-boxes, a series, userpages), a copy of what is generated is put in a folder. When someone visits that page again, it checks to see if there is a copy there, and if there is returns that rather than going through the calculations. This makes things a lot faster.
The problem is when the information changes and becomes out of date. What's supposed to happen is whenever anyone does anything that updates the information, the relevant cached copies are erased.
Except it's difficult to keep track of all the pages that need updating on various events. So I forget some

So some things go odd...