Hi Last weekend, we successfully upgraded our galaxy installations to changeset "3894:837aabec314e" (according to the 'June 8, 2010 New Development News Brief'). We have no problems on Mac and Linux. However if you want to look at your "Saved Histories" on WinXP with Explorer(version 6) the browser freezes. This was not the case before, when we used "3545:2590120aed68" I just checked your public website (http://main.g2.bx.psu.edu/) using WinXP with Explorer and the browser freezes as well. Unfortunately, we (still) have a lot of Windows/Explorer users. So we are a little bit stuck at the moment, as I don't want to downgrade our Galaxy servers...(and it might take a while for our "PC support" to install Firefox) Thank you very much for your help Hans