Steps to resolve:
echo $LANG (resulted in my local settings - en_ZA)
find / -name strings.res (/opt/ibm/domino/notes/90010/linux/res/C/strings.res)
Note no local language directory !
Copied /opt/ibm/domino/notes/90010/linux/res/C/*.* to /opt/ibm/domino/notes/90010/linux/res/C/en_ZA/
Installation settings:
Program directory : /opt/ibm/domino
Data directory : /local/notesdata
UNIX user : notes
UNIX group : notes
90010 upgrade to 901FP2
WARNING:
The following system commands were not located:
rsh
Installation to remote systems will not be possible.
Validating...
Installing Domino Server kits ...
Replacing <NOTESPROGDIR>libsslplus.so
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_IT.msi
Replacing <NOTESDATADIR>outline.jar
Replacing <NOTESPROGDIR>libdxlo.so
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_FR.msi
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_DE.msi
Replacing <NOTESPROGDIR>libjnotes.so
Replacing <NOTESDATADIR>scheduler.js.uncompressed.js
Replacing <NOTESPROGDIR>runjava
Replacing <NOTESPROGDIR>startup
Replacing <NOTESPROGDIR>libndgts.so
Replacing <NOTESDATADIR>Forms9.nsf
Replacing <NOTESPROGDIR>libnotes.so
Replacing <NOTESPROGDIR>runjava.res
Replacing <NOTESPROGDIR>router
Replacing <NOTESPROGDIR>libinotes.so
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_JA.msi
Replacing <NOTESPROGDIR>nsd.sh
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_KO.msi
Replacing <NOTESDATADIR>nvapplet.jar
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_ES.msi
Replacing <NOTESDATADIR>scheduler.js.gz
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9.msi
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_EL.msi
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_PT.msi
Replacing <NOTESPROGDIR>dconsole.jar
Replacing <NOTESDATADIR>FilesInteg.js.gz
Replacing <NOTESDATADIR>FilesInteg.js
Replacing <NOTESDATADIR>scheduler.js
Replacing <NOTESDATADIR>dconsole.jar
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_RU.msi
Replacing <NOTESPROGDIR>libhttpstack.so
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_ZH_TW.msi
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_ZH.msi
Replacing <NOTESPROGDIR>memcheck
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_EN.msi
Replacing <NOTESDATADIR>actionbar.jar
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_CS.msi
Replacing <NOTESPROGDIR>libftgtr40.so
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_TR.msi
Replacing <NOTESPROGDIR>smtp
Replacing <NOTESDATADIR>editor.jar
Replacing <NOTESPROGDIR>liblsxbe.so
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_PL.msi
Replacing <NOTESPROGDIR>amgr
Replacing <NOTESDATADIR>IBM_iNotes_ActiveX_Installer_9_SL.msi
Replacing <NOTESDATADIR>dwabho.dll
Replacing <NOTESDATADIR>dwa9W.cab
Replacing <NOTESPROGDIR>event
Replacing <NOTESPROGDIR>dbmt
The installation completed successfully.
Whoohooo !!