I’ve had troubles in the past with iCab crashing. On System 7.6.1, the lastest version doesn’t work, so it’s back to 2.9.9, which has a PowerPC-specific build.
As Dan Palka of System7today.com advises, I turned off CSS style sheets in all my browsers (IE, Netscape and now iCab), and things are indeed quicker. AND … iCab hasn’t yet crashed. It is getting through to Blogger (and I will test on Movable Type, too).