Only unless you want to slow down your Amiga. :-D
I upgraded from 3.1 to 3.9 on an A1200 68030 @ 50mhz w/ 16mb Ram, now I wished I hadn't... Hehe.
The only nice thing is a Dock... but you can just leave out icons to place them on the desktop or use ToolManager etc...
A fast 3.0/3.1 is better imho... :-)
