I did not find solution for that. By trying different stuff it started to work, and describind what I did was my only purpose to register on this forum (maybe someone will be interested, if it is somewhere solved, admins will delete this post)
IPAD 1, 32 GB WiFi + Toshiba Satellite 5105 Win XP (from around year 2002)
Problem: Jailbreaking stops on "waiting for reboot".
Solution: before experimenting, I tried suggested shaking, USB changing, even rebooting ipad with redsn0w_win_0.9.6rc9 running - nothing.
Helped one of those:
- Turned off antivir (MS Security Essentials)
- running redsn0w as administrator (though me as user have administrative rights)
- Tried to use all of the available USB ports, one of them worked
So in the end it jailbroken device. Now I have to think what to do with it that I could not do with not jailbroken