"ERROR: out of memory" during pg_restore

I've got a 7.4 database that gives postgres an "out of memory" error
when restoring into a 32-bit build 8.1, yet restores into a 64-bit
build of 8.1.

I dumped a 7.4.9 database, running on Debian/testing, 32-bit, using
this command:

    pg_dump --format=c --blobs production --verbose >production.dbarchive

This results in a 37G file.  The great bulk of this database is in
large objects.

I can restore it into 8.1.0, running on Debian testing, 64-bit, using
this command:

    pg_restore -d production production.dbarchive

However, I cannot restore it into 8.1.3, running on Debian testing,
32-bit, using the same command.  I get this in the postgres log:

TopMemoryContext: 45592 total in 4 blocks; 4032 free (31 chunks); 41560 used
Filesystem: -1367351296 total in 361 blocks; 34704 free (305 chunks); -1367386000 used
TopTransactionContext: 8192 total in 1 blocks; 7856 free (0 chunks); 336 used
PLpgSQL function cache: 8192 total in 1 blocks; 5968 free (0 chunks); 2224 used
CFuncHash: 8192 total in 1 blocks; 4936 free (0 chunks); 3256 used
Type information cache: 8192 total in 1 blocks; 1864 free (0 chunks); 6328 used
Operator class cache: 8192 total in 1 blocks; 4936 free (0 chunks); 3256 used
MessageContext: 8192 total in 1 blocks; 1952 free (2 chunks); 6240 used
smgr relation table: 24576 total in 2 blocks; 14080 free (3 chunks); 10496 used
Portal hash: 8192 total in 1 blocks; 3912 free (0 chunks); 4280 used
PortalMemory: 8192 total in 1 blocks; 8176 free (1 chunks); 16 used
Relcache by OID: 8192 total in 1 blocks; 2336 free (0 chunks); 5856 used
CacheMemoryContext: 1040384 total in 7 blocks; 226336 free (1 chunks); 814048 used
pg_largeobject_loid_pn_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_toast_2618_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_rewrite_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_constraint_contypid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_constraint_conrelid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_constraint_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_constraint_conname_nsp_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_shdepend_depender_index: 1024 total in 1 blocks; 256 free (0 chunks); 768 used
pg_attrdef_adrelid_adnum_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_attrdef_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_pltemplate_name_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_shdepend_reference_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_depend_depender_index: 1024 total in 1 blocks; 256 free (0 chunks); 768 used
pg_depend_reference_index: 1024 total in 1 blocks; 256 free (0 chunks); 768 used
pg_index_indrelid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_type_typname_nsp_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_type_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_trigger_tgrelid_tgname_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_statistic_relid_att_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_auth_members_member_role_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_auth_members_role_member_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_rewrite_rel_rulename_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_proc_proname_args_nsp_index: 1024 total in 1 blocks; 256 free (0 chunks); 768 used
pg_proc_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_operator_oprname_l_r_n_index: 1024 total in 1 blocks; 192 free (0 chunks); 832 used
pg_operator_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_opclass_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_opclass_am_name_nsp_index: 1024 total in 1 blocks; 256 free (0 chunks); 768 used
pg_namespace_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_namespace_nspname_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_language_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_language_name_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_inherits_relid_seqno_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_index_indexrelid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_authid_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_authid_rolname_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_database_datname_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_conversion_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_conversion_name_nsp_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_conversion_default_index: 1024 total in 1 blocks; 192 free (0 chunks); 832 used
pg_class_relname_nsp_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_class_oid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
pg_cast_source_target_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_attribute_relid_attnum_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_attribute_relid_attnam_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_amproc_opc_proc_index: 1024 total in 1 blocks; 256 free (0 chunks); 768 used
pg_amop_opr_opc_index: 1024 total in 1 blocks; 328 free (0 chunks); 696 used
pg_amop_opc_strat_index: 1024 total in 1 blocks; 256 free (0 chunks); 768 used
pg_aggregate_fnoid_index: 1024 total in 1 blocks; 392 free (0 chunks); 632 used
MdSmgr: 8192 total in 1 blocks; 2608 free (0 chunks); 5584 used
LockTable (locallock hash): 8192 total in 1 blocks; 3912 free (0 chunks); 4280 used
Timezones: 47592 total in 2 blocks; 5968 free (0 chunks); 41624 used
ErrorContext: 8192 total in 1 blocks; 8176 free (3 chunks); 16 used
ERROR:  out of memory
DETAIL:  Failed on request of size 80.

What other information can I supply?  What experiments should I do?

Thanks in advance for any help you can offer.

        Wayne Conrad