Oh, yes. 
No, I don't support smaller than 64MB, it's just too problematic. You can use virtual memory, though -- if you use RAM Doubler or Apple VM and make an addressing space large enough, you can run it. In fact, my 1400 has 60MB of RAM "doubled" to 120MB, and I run Classilla on that for testing. Doing that as we speak for the imminent release of Classilla 9.1, in fact.
No, I don't support smaller than 64MB, it's just too problematic. You can use virtual memory, though -- if you use RAM Doubler or Apple VM and make an addressing space large enough, you can run it. In fact, my 1400 has 60MB of RAM "doubled" to 120MB, and I run Classilla on that for testing. Doing that as we speak for the imminent release of Classilla 9.1, in fact.