pbulk hang in 5.99.21

[Thomas Klausner <wiz%NetBSD.org@localhost>]

Hi!

I've just upgraded my 5.99.21 from Oct 22 to Nov 8 (kernel and
userland, packages not rebuilt), and now a pbulk (set up in a tmpfs)
hangs during the scan phase. Output including some ctrl-t:

Scanning...
................................load: 1.00  cmd: make 29443 [layerfs]
0.13u 0.02s 0% 2196k
make: Working in: /usr/pkgsrc/chat/finch
make: Working in: /usr/pkgsrc/chat/libpurple
make: Working in: /usr/pkgsrc/chat/finch
make: Working in: /usr/pkgsrc/net/avahi
make: Working in: /usr/pkgsrc/x11/gtk2
load: 1.00  cmd: make 29443 [layerfs] 0.13u 0.02s 0% 2196k
make: Working in: /usr/pkgsrc/chat/libpurple
make: Working in: /usr/pkgsrc/chat/finch
make: Working in: /usr/pkgsrc/chat/finch
make: Working in: /usr/pkgsrc/net/avahi
make: Working in: /usr/pkgsrc/x11/gtk2
load: 1.08  cmd: make 29443 [layerfs] 0.14u 0.02s 0% 2196k
make: Working in: /usr/pkgsrc/chat/libpurple
make: Working in: /usr/pkgsrc/x11/gtk2
make: Working in: /usr/pkgsrc/chat/finch
make: Working in: /usr/pkgsrc/net/avahi
make: Working in: /usr/pkgsrc/chat/finch

Second try:
^C
# /usr/pkg_bulk/bin/bulkbuild
Warning: All log files of the previous pbulk run will be
removed in 5 seconds. If you want to abort, press Ctrl-C.
Scanning...
........load: 1.06  cmd: make 27628 [tstile] 0.00u 0.00s 0% 1360k
load: 1.06  cmd: make 27628 [tstile] 0.00u 0.00s 0% 1360k
load: 1.03  cmd: make 27628 [tstile] 0.00u 0.00s 0% 1360k

Any ideas?
 Thomas