I am unable to login to one particular site using Firefox 10.0.2 in Lubuntu 11.10. The virtual keyboard is visible but does not react at all. I can login OK to several (all) other sites with similar virtual keyboards using the same FF in Lubuntu. I can login to the problem site OK using Chromium in the same Lubuntu session. I can login to the problem site OK using Firefox 8.0.1 in XP on the same PC. So I suppose there must be some setting in FF10.0.2 which is obstructing the virtual keyboard - but which? I have been unable to find anything to fix or diagnose this problem so far. Thanks for any help!