Opening connection is slow

We have a problem on a customer site where opening the Centera connection using XAM takes approx. 15 seconds, while doing the same on the US cluster of EMC takes 4-5 seconds.

This is not application dependent, as we have also verified this with the EMC Java tool to open the connection which gives the same results.

Has anybody seen this anywhere or has some hints what we or the customer has to do to fix this problem? We do believe this to be a configuration problem rather than a software problem, but would anyway try to help the customer.

Thanks in advance.

Hartmut