I am facing this issue on intrepid and jaunty using wired connection (with NM in system mode).
Even before reading this thread I went through moving S31umountnfs.sh up in the rc0/6 scripts in order to find the critical tip. For me this was S20sendsigs (as described by Thierry), i.e. S19umountnfs.sh solved it, S21umountnfs.sh broke it (so there was no need to put it before S15wpa-ifupdown). Ppl using wireless should check this for S15wpa-ifupdown, as well.
I am facing this issue on intrepid and jaunty using wired connection (with NM in system mode).
Even before reading this thread I went through moving S31umountnfs.sh up in the rc0/6 scripts in order to find the critical tip. For me this was S20sendsigs (as described by Thierry), i.e. S19umountnfs.sh solved it, S21umountnfs.sh broke it (so there was no need to put it before S15wpa-ifupdown). Ppl using wireless should check this for S15wpa-ifupdown, as well.