I have a Thinkpad T61 with a 64 GB SSD running Ubuntu 12.04 LTS. Often, after I have used Chrome or Firefox to browse a website, I close the browser, do some more work (in this case, writing a paper in LibreOffice Writer), and then need to look up something on the Internet. Both Chrome and Firefox can't display a web page. I have tried using bookmarks and manually typing the URL. Nothing but a reboot can break out of the problem. Network connection (Wi-Fi) is not the issue, because I can browse with my desktop (also running Ubuntu 12.04 LTS) which is sitting right beside the laptop and also connected via Wi-Fi. I have built several laptops and desktops with Ubuntu, and only the one using a SSD has this issue. Thanks!