[Samba] This works, but does anybody know why?

[Sistemas]

Hello, I have a dbf based program running on a Samba share (2.2.8a). I have optimized performance a bit with the socket options. But after a few days file access seems to progressly slow down anyway. Now, if I reboot, things go back to normal speed.
Has anybody worked around this issue, or have any clue? Or do you need more information about my configuration?

Thank you very much in advance.

Regards,
LauZ