Gnucash 2.4.0 error libgnc-qof.so.1:

[Ken Norris]

On Ubuntu 10.04

After installing gnucash 2.4.0 according to the INSTALL instructions and
running from command line i get

"gnucash: error while loading shared libraries: libgnc-qof.so.1: cannot
open shared object file: No such file or directory"

gnucash will run from command line with

"LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH /usr/local/bin/gnucash"

Anyone know, preferably in very simple steps, a permanent fix for this? 

thanx

Ken Norris