I have seen other posts, none quite match my issue. I bought an HP mini 110 black friday of '09. It came standard with 7 starter. I upgraded to premium, and from that point on had issues with 'Windows Explorer not responding'. Mainly when using Internet explorer, and having other programs open, but not always. Recently, I reformatted. This had solved the problem, and I didn't have an issue for months. Now that I updated to sp1, it's happening again, and more often. Any ideas, tips? This is a very annoying problem.