I use iceweasel to visit the site http://www.strictlysudoku.com. In the left-hand column there are ĺogin' and 'register' links. If I click one of those, a window pops up, but it is completely blank. On my wife's computer, which uses the same gateway/firewall, and which is also more or less Debian (well, ubuntu), clicking the links produces proper 'login' and 'register' forms. Any idea of what could be the matter on my computer? Regards, Jan