pthread in glibc2.2.2

[min]

Hi, I installed glibc 2.2.2 on my linux 2.4.0, after which, xlock and javac 
both segfaults.  gdb on xlock (xlockmore, recompiled w/ the current libc, w/ 
gcc 2.95.2) traces it to:  

Starting program: /usr/local/bin/xlock 
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
__pthread_alt_lock (lock=0x402806e4, self=0x0) at spinlock.c:406
406       do {

I then updated the kernel to 2.4.2, the problem remains...

Is there some incompatibility in pthread (glibc was compiled w/ linuxthreads 
addon).


Some of the other questions I had about glibc 2.2.2

on compiling glibc2.2.2, the nss_db-2.2 addon complained no rule for subdir
also, initial installation of glibc2.2.2 caused most of my internet 
applications to not able to lookup hostnames until I downloaded and compiled a 
separate package from sleepycat for libdb.  Wasn't libdb part of the c library 
in 2.1.3?  (I removed all files w/ lib*-2.1.3.* from the /lib directory) as 
well as libdb2?

thanks