When I point iCab 4.8 to http://www.java.com/en/download/testjava.jsp, it tells me I am running J2SE Runtime 6 Update 26 (i.e., Java 1.6). However, when I point Firefox 11.0 to the same page, the applet there says that I am running J2SE Runtime 5 Update 30 (i.e., Java 1.5). So it seems that Firefox 11.0 on MacOS 10.5.8 is a 32-bit browser and can't run Java 1.6 applets. But then someone told me that when he points Firefox 11.0 running on MacOS 10.5.8 to the same page, it tells him that he is running Java 1.6. Do I need to change a setting somewhere to get Firefox 11.0 to run in 64-bit mode? I'm using an iMac8,1 with Intel Core 2 Duo 2.66 GHz chips, and 6 MB of memory. Java 1.6 is already first in the list in Java Preferences, and its box is checked.