Hi,

I'm using Scientific 6.2 with kernel vmlinuz-2.6.32-220.13.1.el6.x86_64 
and I can't mount a folder on  nfs server. The server run well, the 
folders could be mounted with my previous version.
The showmount command works fine on Scientific but when I mount a folder 
a time out error occur.
The following tcpdump show what happen when I start the mount command on 
esprimo, the dump was created by the server octopus:

16:17:04.247339 arp who-has octopus tell vigor
16:17:04.247410 arp reply octopus is-at 00:a1:b0:a1:2d:94 (oui Unknown)
16:17:06.692464 IP esprimo.57894 > octopus.domain: 44264+ A? 
octopus.xxxxxxxxxxx.xxx. (46)
16:17:06.692472 IP esprimo.57894 > octopus.domain: 28144+ AAAA? 
octopus.xxxxxxxxxxx.xxx. (46)
16:17:06.693684 IP octopus.domain > esprimo.57894: 44264* 1/1/1 (96)
16:17:06.694142 IP octopus.domain > esprimo.57894: 28144* 0/1/0 (95)
16:17:06.706010 IP esprimo.1946382194 > octopus.nfs: 0 proc-285212672
16:17:06.706124 IP octopus.nfsd > esprimo.667: R 0:0(0) ack 1446085413 win 0
16:17:07.707005 IP esprimo.1946382194 > octopus.nfs: 0 proc-285212672
16:17:07.707112 IP octopus.nfsd > esprimo.931: R 0:0(0) ack 2904100776 win 0
16:17:09.708045 IP esprimo.1946382194 > octopus.nfs: 0 proc-285212672
16:17:09.708164 IP octopus.nfsd > esprimo.898: R 0:0(0) ack 1643028723 win 0
16:17:13.709094 IP esprimo.1946382194 > octopus.nfs: 0 proc-285212672
16:17:13.709217 IP octopus.nfsd > esprimo.823: R 0:0(0) ack 3627061754 win 0
16:17:21.710189 IP esprimo.1946382194 > octopus.nfs: 0 proc-285212672
16:17:21.710298 IP octopus.nfsd > esprimo.827: R 0:0(0) ack 1741549279 win 0
16:17:24.246462 arp who-has esprimo tell vigor
16:17:31.711291 IP esprimo.1946382194 > octopus.nfs: 0 proc-285212672
16:17:31.711431 IP octopus.nfsd > esprimo.1007: R 0:0(0) ack 2248962949 
win 0
16:17:36.710968 arp who-has octopus tell esprimo
16:17:36.711021 arp reply octopus is-at 00:a1:b0:a1:2d:94 (oui Unknown)
16:17:41.712389 IP esprimo.1946382194 > octopus.nfs: 0 proc-285212672
16:17:41.712516 IP octopus.nfsd > esprimo.790: R 0:0(0) ack 3337005692 win 0
16:17:46.711600 arp who-has esprimo tell octopus
16:17:46.711709 arp reply esprimo is-at 00:30:05:d1:60:2a (oui Unknown)
16:17:53.234186 IP esprimo.60578 > octopus.ssh: P 1:49(48) ack 192 win 
501 <nop,nop,timestamp 4782694 1654367>

I have only basic knowledge about TCP/IP but it's seems that esprimo 
start the connection with two request and use an invalid port number.

Is there somebody who know what's going wrong?

Thank you for your support.