Q: spinlock on Alpha? (PG7.0.2)

RedHat Linux 6.2 on Alphaserver DS10 (egcs-1.1.2, glibc-2.1.3, 
libstdc++-2.9.0).
Postgresql-7.0.2 source

Compiles and installs just fine. However, both the regular initdb and 
parallel regression testing's initdb stage fails with a core file and 
message:

FATAL: s_lock (2030d360) at spin.c:116, stuck spinlock. Aborting.
FATAL: s_lock (2030d360) at spin.c:116, stuck spinlock. Aborting.


I fished around in the mailing lists and as I understand there has 
been some problems with spinlock on Alpha, which have been 
resolved? 

Any ideas what could I check/do about that greatly appreciated ( 
especially as I need to move the production server to alpha ASAP 
:(( )!

TIA, 
Emils