I installed PB1 on my MacBook Pro '11 and I've never really had issues with the Public Betas before but this time the machine is so sluggish that it's pretty much unusable. I was finally able to get Activity Monitor open and Logd, OtherUserExtensions, and touristd and all three were using incredibly high percentages of the CPU. I have googled it but it didn't really help. Does anyone here have any suggestions? I also tried submitting feedback to Apple and the application said it timed out every time it tries to send.