smbmount --> df: /mnt/Archives: I/O Error

[Nicolas GOUBLE]

Hi,

I mount //MYSERVER/Archives using 

smbmount //MYSERVER/Archives /mnt/Archives -N

(MYSERVER is a NT SERVER box and the Linux box from which I smbmount
is 2.2.13-7mdk.
Everything is fine : 

[root at lima linux]# df 
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/hda6              1981000   1373871    504718  73% /
/dev/hda7              2873619   1746320    978700  64% /persist
vienne:/usr3           2044000   1691220    352780  83% /usr3
vienne:/usr6           2044000    976348   1067652  48% /usr6
/dev/hda1              3068383   1883199   1185183  61%
/mnt/nt                 
//MYSERVER/Archives        6835584   5318400   1517184  78%
/mnt/Archives

during a couple of hours ans then the link "breaks" :

[root at lima linux]# df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/hda6              1981000   1373871    504718  73% /
/dev/hda7              2873619   1746320    978700  64% /persist
vienne:/usr3           2044000   1691220    352780  83% /usr3
vienne:/usr6           2044000    976348   1067652  48% /usr6
/dev/hda1              3068383   1883199   1185183  61% /mnt/nt
df: /mnt/Archives: I/O Error                                          

and I have to umount and smbmount again...

Someone has an idea ?

Thanks in advance