Since I installed Big Sur my computer has been freezing and the only solution is to shut down and restart. It's happened three times in the past week. Has anyone heard of similar issues with Big Sur? Also is there a location to report issues with a new IOS system like Big Sur? I can call Tech support but I don't think talking to a tech support person is going to help. I suspect its a problem with Big Sur and I just want to let them know of this issue. Dav