At the moment I'm working on a website which is having some problems with minifying the CSS and HTML using Opcode: APC.

When I use "Disk" it works fine, but as soon as I switch to APC the problems start.

At first everything seems fine, but if you refresh a couple of times, sometimes it takes 20 refreshes, the layout breaks and some style elements are displayed wrong. If you refresh again, it's back to normal again though.

It happens randomly so I don't have a clue where to look, but I noticed that if I refresh with two computers it happens simultanously on both the systems.

Can anyone help me out on this one?

Thanks in advance!