I can't start postgres anymore

Hello,

I can't start postgres anymore

When I try to start postgresql script I've the following error message in
the logfile :
###
DEBUG: database system was interrupted being in recovery at 2002-11-07
14:12:46 CET
This probably means that some data blocks are corrupted
and you will have to use the last backup for recovery.
DEBUG: invalid resource manager id in primary checkpoint record
DEBUG: using previous checkpoint record at 0/7039D94
DEBUG: redo record is at 0/7039D94; undo record is at 0/0; shutdown TRUE
DEBUG: next transaction id: 473535; next oid: 166062
DEBUG: database system was not properly shut down; automatic recovery in
progress
DEBUG: redo starts at 0/7039DD4
FATAL 2: btree_insert_redo: failed to add item
DEBUG: startup process (pid 1805) exited with exit code 2
DEBUG: aborting startup due to startup process failure
###

My Linux-version is :
-Linux version 2.4.2-2 (root(at)porky(dot)devel(dot)redhat(dot)com)
(gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-79))
My Postgresql version is the binary:
- postgresql 7.2