I've been having a problem recently where on any program, whenever I click Save As, or Save for the first time, it takes at least 30 seconds to open the finder window to choose where I want to save the file. I just have the beach ball, and it finally loads up, sometimes taking as long as a full minute. This has only been happening for about a week or two, and nothing else on the Macbook Pro lags. Any ideas what could cause this?