Any else get a big white box on their screen when starting a new OP?

[waterwatcher123]

26. I use FireFox with Adblocker as well - no problems whatsoever.

You might need to reboot your computer, clear the browser history and see if it improves. How much memory do you have in your computer (RAM)? If you have too many programs open or multiple versions of Firefox running at the same time, it will likely impact your computer's performance. You could check the performance by looking at Task Manager in Windows while you are having the problem (it will give you some indication of whether your disk drive is slow, your CPU is overloaded, or whether certain programs are using an inordinate amount of memory). Your computer can also perform poorly during a major download for Windows (which tend to be huge files).