VERY common problem unfortunately, and no it hasnt been fixed with the new NT. There are Pajero Club members that have reported companion shaft failures on NT's as well. I personally know of three NP's that have had the problem, only one of these managed to get any sort of warranty assistance from Mitsubishi despite there being a published "hotline fix" or service bulletin since the 11th of April 2006!!!! Its bulletin # NM27-002
Be aware of this issue if you have or are looking at buying a Pajero (for the record I own an Np Turbo Diesel Pajero and love it, I just wish Mitsubishi would stand up to the "better built better backed" statement more than they do at present.
Cheers
Scott