I can clear this up as I went through this last night Here is the fix. The link is an article written for the iPhone on 4.3.1, but it worked like a charm for the iPad 2 running 4.3.3.
Hi,
I noticed the app exiting behavior. You can use issh and login to the IPv4 loopback
Address as root as an alternative to get a local shell,
Regards,
Dave S.
PS - you also have to load the openssh package from Cydia after JB and before doing the above.
127.0.0.1 is the IPv4 local loopback address.