Errors with firefox

Hello there

Not sure if the underlying problem here is with mod_ssl or openssl or
something else - so apologies if this email is going to the wrong place.

I have apache compiled on solaris with sun cc with mod_ssl-2.8.25-1.3.34 and
openssl-0.9.8a (I've also tried 0.9.7i).

When accessing the site using Internet Explorer I have no problems.  With
Firefox the browser reports an 'incorrect Message Authentication Code' and
the server logs report:

[Mon Jan 23 13:13:54 2006] [error] mod_ssl: SSL handshake failed (server
xxx:443, client xxx) (OpenSSL library error follows)
[Mon Jan 23 13:13:54 2006] [error] OpenSSL: error:1408F455:SSL
routines:SSL3_GET_RECORD:decryption failed or bad record mac

I do have previous builds that 'work' ... but have been unable to determine
precisely what change initiated this problem.  One possible suspect is the
Sun compiler, which was now from studio 11 and was previously from an
earlier version which I don't have access to any more.

Any suggestions much appreciated

Thanks

Michael Smith