Threaded lang/perl5 on sparc?

[Chris Ross <cross+netbsd%distal.com@localhost>]

  Hello.  So, I'm updating a sparc image to 5.0_STABLE, and was  
rebuilding packages that I had on the previous image.  This includes  
perl (previously 5.8.8, now to be 5.10.1).

  The default (HEAD pkgsrc) perl configuration builds with threads,  
and I know there have been threading problems on sparc/sparc64 for a  
while now.  So, does anyone know whether I can presume threads might  
work alright in perl?  The prime reason I ask, is because after perl  
was built, a make test showed:

ext/threads-shared/t/0nothread................................ok
ext/threads-shared/t/av_refs..................................ok
ext/threads-shared/t/av_simple................................ok
ext/threads-shared/t/blessed..................................ok
ext/threads-shared/t/clone....................................ok
ext/threads-shared/t/cond.....................................ok
ext/threads-shared/t/disabled.................................ok
ext/threads-shared/t/hv_refs..................................ok
ext/threads-shared/t/hv_simple................................ok
ext/threads-shared/t/no_share.................................ok
ext/threads-shared/t/object...................................ok
ext/threads-shared/t/shared_attr..............................ok
ext/threads-shared/t/stress...................................# Test  
failed: 29 threads timed out
FAILED at test 1
ext/threads-shared/t/sv_refs..................................ok
ext/threads-shared/t/sv_simple................................ok
ext/threads-shared/t/utf8.....................................ok
ext/threads-shared/t/waithires................................ok
ext/threads-shared/t/wait.....................................ok

  Although, all other threads tests seem to have been successful.   
So, I just wanted to ask if anyone had any other information/advice.

  Thanks.

                      - Chris