[Samba] Sporadically open from Directorys lasts long

Hi List,

I need your experience and help.
We use here samba 3.014. Sporadically there are the following problems.

It can be that one must wait till 1 minute around to a Directory is opened.
Lasts to this waiting period is a Ping on the Samba server without problem.
Likewise there is none suspect logs in the log file of samba.

What can I do here?

Many thanks for every help.

Stefan

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