I've been having some problems recently with Safari and I'm at a loss as to why they are occurring. Specifically, after browsing through a few webpages, I'll go back a page (set up 2 finger swipe as gesture) and from that point, I cannot load any other webpages. I don't get a beach ball and links are available but when I click on a link or try to reload the page, nothing changes--it'll going through the motions (progress bar will move, etc) but the page doesn't change, nor the address in the address bar. Reloading the page has no effect. I ultimately have to close and reopen Safari to reset it. Today, I noticed a couple of new issues. First, the ability to close a tab using the x box on the left hand side of the tab randomly disappears--no x to be found. Also, I tried to close Safari using the Safari > Quit Safari option and it was greyed out, no pages were stuck loading and no beach ball, just unable to select it. When I right clicked on the Dock icon, selecting Quit did nothing. I went to force quit and expected to see 'Application Not Responding' but that wasn't the case. I had to force quit to close the app. I'm using Safari on a new 2011 Mac Mini Server that has been upgraded with 8 GB of RAM (a few weeks ago, only started having these issues the past few days). I have iStats running and in each occurrence, I have plenty of available RAM (I'm aware of the bug where Safari gobbles up your RAM). I have also cleared the history and cache multiple times. I also rarely have more than 2 or 3 tabs open at once. Anyone else experience anything similar or have an insight as to what may be causing the problem?