The last operation listed in the shell is:
"(3.503184) frontends/amiga/gui.c:5354 ami_gui_splash_open: Attempting to open splash window"
Then the system freezes.
Do you see the splash window?
If not:
Are you running at least AmigaOS 3.5?
Do you have a PNG DataType installed and active?
Do you have any weird 3rd party patches or replacement components?
How much RAM do you have free when you start NetSurf?
If you do see the splash, then I'd have expected a little bit more output.