I just hate waiting around for things to happen, especially on my computers. On my fastest Windows XP desktop(1), Excel 2007 takes a painful 30 seconds to display its contents if I click on a simple .XLSX file in Explorer. I find this inexplicable. I hypothesized that this might be a just-in-time compile pause or a security check, but those probably aren't the cause: if I start Excel without a file, it starts u I hypothesized that this might be a just-in-time compile pause or a security check, but those probably aren’t the cause: if I start Excel without a file, it starts up in one or two seconds. When I load the same .XLSX file from the Excel recent documents list it displays in under a second.Any ideas, other than the obvious workaround of loading the worksheet from Excel?(1) The computer in question is a 3.2 GHz Pentium 4 with 2 GB of RAM and NVidia GeForce FX 5200 graphics. It seemed like a fast box several years ago, when it was new. Software Development