Postgres 8.4 segfaults on CentOS 5.5 (using EnterpriseDB installers)

Hi.

We've been running PostgreSQL 8.4.2 on CentOS 5.4 (64-bit),
installed with the EnterpriseDB installer. This has been excellent.

Now we have our first CentOS 5.5 server (64-bit) and I installed
PostgreSQL 8.4.4 using the EnterpriseDB installer, and it is unable to
start the database instance. If I try to start it manually, I get a
Segmentation Fault. I tried the 8.4.2 installer, but the installed
binaries segfault too. Have you seen this? Any suggestions to
resolve it?

My /var/log/messages contains this after I try to run "psql" or
"pg_ctl" (after 8.4.2 install):

Jun 4 18:12:07 hwd-ddc-fox-prod01 kernel: psql[14072]: segfault at
0000000000000008 rip 000000372340a402 rsp 00007fffc0b2b940 error 4

Jun 4 18:22:53 hwd-ddc-fox-prod01 kernel: pg_ctl[14163]: segfault at
0000000000000008 rip 000000372340a402 rsp 00007fff8d14f040 error 4

Here is an strace:

open("/opt/PostgreSQL/8.4/bin/../lib/libsepol.so.1", O_RDONLY) = -1
ENOENT (No such file or directory)
open("/lib64/libsepol.so.1", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0(at)=\0%7\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=247496, ...}) = 0
mmap(0x3725000000, 2383168, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3725000000
mprotect(0x372503b000, 2097152, PROT_NONE) = 0
mmap(0x372523b000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3b000) = 0x372523b000
mmap(0x372523c000, 40256, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x372523c000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x2abeb4a36000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x2abeb4a37000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x2abeb4a38000
arch_prctl(ARCH_SET_FS, 0x2abeb4a37960) = 0
mprotect(0x372a211000, 4096, PROT_READ) = 0
mprotect(0x3724615000, 4096, PROT_READ) = 0
mprotect(0x3723b4d000, 16384, PROT_READ) = 0
mprotect(0x3724281000, 4096, PROT_READ) = 0
mprotect(0x3723e02000, 4096, PROT_READ) = 0
mprotect(0x3737008000, 4096, PROT_READ) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++

I tried turning off SELinux but still get the Segmentation Fault.

Any suggestions, please?

Best,
-at