V9.3 Migration issues

Hello.

I am in the process of migrating several PostgreSQL databases from a 32-bit 
V9.1.4 environment to a 64-bit V9.3 environment and have a couple of problems.

I have used pg_dump and pg_restore (or postgis_restore.pl) as required by the 
combination of version and word size migration and the results have been 
(superficially) good.

However,

1. Some tables in some databases have lost access privileges.
That is, users who could access tables on the old server are denied access on 
the new.
I have fixed this by manually granting access where necessary but wonder 
whether the original issue is a bug or something that I have missed in the 
migration.

2. All CGI bash scripts now give:
[Sat Oct 04 16:45:14.439606 2014] [cgi:error] [pid 12696] [client 
192.168.0.7:1556] AH01215: psql: could not connect to server: No such file or 
directory, referer: http://192.168.0.200/jobs/jobs
[Sat Oct 04 16:45:14.439641 2014] [cgi:error] [pid 12696] [client 
192.168.0.7:1556] AH01215: \tIs the server running locally and accepting, 
referer: http://192.168.0.200/jobs/jobs
[Sat Oct 04 16:45:14.439658 2014] [cgi:error] [pid 12696] [client 
192.168.0.7:1556] AH01215: \tconnections on Unix domain socket 
"/tmp/.s.PGSQL.5432"?, referer: http://192.168.0.200/jobs/jobs

The socket /tmp/.s.PGSQL.5432 exists and has 777 permissions and executing the 
same scripts from the command line works perfectly.

Presumably there is a permissions or configuration issue here but I cannot see it.

Any advice gratefully received.

Cheers and thanks,
Stephen

PS. Java programs, Tomcat servlets and TCP psql connections on/to the same box 
also work perfectly.
-- 
=============================================================================
Stephen Davies Consulting P/L                             Phone: 08-8177 1595
Adelaide, South Australia.                                Mobile:040 304 0583
Records & Collections Management.