Oracle 8 on Linux: error in loading stored libraries

I have oracle8i installed with RH 6.0. When I start "svrmgrl" I receive the following error message

"error in loading stored libraries: libskgxp8.so : cannot open shared object file"

I'm very grateful for any help at all.

Cheers, Alan.

Extra information

1. The file libskgxp8.so does exist - it's in my $ORACLE_HOME/lib directory
2. $ORACLE_HOME is properly defined
3. $LD_LIBRARY_PATH is defined as $ORACLE_HOME/lib
4. I'm trying to run this as a user called ORADBA belonging to group DBA
5. The software installation was performed as user ORACLE in group OINSTALL (owns all directories) - done in silent mode
6. I also made ORADBA account a member of OINSTALL group (ORACLE's group)
7. ORADBA can read the files in $LD_LIBRARY_PATH
8. I have not installed any patches to RH 6.0 Linux or Oracle installation