I have searched the forum for an answer to my problem, but I could not find a similar issue.
I use a mac with Snow Leopard just installed today, but I have had this problem since spring. When using Painter, whether it's 10 or a newly installed 11 or even Sketchpad (both were trials and I do not yet own either), if I click outside the program and click back, such as a chat client or browse the net or iTunes or even Finder, I have no pressure. If I click back outside Painter and click back in, command+Tab, or Command+M (full screen) my work, the pressure comes back.
I have uninstalled and reinstalled the drivers, tried using an older driver, updated my system (including a full reinstall of Leopard), and of course tried Painter 11, but the problem remains. I know of one other person who has this same problem only she runs Windows. We both use a Wacom Intuos 3.
Pressure works as it should in all other art programs.
I would be so grateful if someone could help me solve this!