nfs Permission Denied

[clusterx]

guys i've been suffering from this freaking "Permission Denied" error from days, and no solution seems to work. I extensively searched the net and have gone through almost all the forum reps i could find but

here are my configs

My nfs server is Roh-06[172.16.7.26]
it shares two volumes, below is my /etc/exports

/home/lamcluster/common 172.16.0.0/255.255.0.0(rw,sync,no_root_squash)
/root/demos 172.16.0.0/255.255.0.0(rw)

and below is my hosts.allow file

portmap: 172.16.0.0/255.255.0.0
lockd: 172.16.0.0/255.255.0.0
rquotad: 172.16.0.0/255.255.0.0
mountd: 172.16.0.0/255.255.0.0
statd: 172.16.0.0/255.255.0.0

hosts.deny is ALL:ALL

now when i try to mount /home/lamcluster/common from any root/non-root user I get a "permission denied" error

however [and strangely] if i mount /root/demos from any root/non-root user, it works fine

I don't if it matters but i even tried keeping the same usernane/userids on client and server machines and also note that firewall is turned off

I wish anybody can help me in this regard, plzzzzzzzzzzzz

[ennoil]

I know this is really basic but it still catches me occasionally...
Have you ensured that your UID numbers match between systems? (i.e. jkennedy has a UID of 1000 on both servers.)

[Roxoff]

And does the server have any local port-blocking firewall turned on?

[clusterx]

@ennoil
as i told earlier, userid is same on both [501]

@RoxOff
and the firewall is turned off on both PCs

[Roxoff]

If you temporarily remove the ALL:ALL from /etc/hosts.deny does it work then? Or if you put 'ALL:172.16.0.0/16' in /etc/hosts.allow?

[clusterx]

i'll try this though i'm not pretty confident about it. The thing bothering me is that i'm able to mount the /root/demos folder from any root/non-root user on client [which has same options as u can see in my 1st post]. So i guess its some permission problem with /home/lamcluster/common [lamcluster is username and i've tried setting the permission for the folder to 777 but it didn't work]

however i'll try ur suggestion