[pjmlp]

That is true story.

Thankfully as of Vista, video drivers are back in userspace.

NT is still a microkernel by design. What Microsoft did was to keep the modules logically separated and use kernel internal RPC to switch between areas of responsibility in the kernel. Even if it looks like a monolithic one.

This is how hybrid mikrokernels tend to work.

Since Vista the support for user space drivers has been improved a lot.