Problem with Linux - Freeswan

Hello everyone

I have the following problem. I have a linux server in Mexico running
Freeswan connecting to our server in Miami. The server in Miami is
also connected with fresswan to our server in Argentina. To go from
Mexico to Argentina, I pass through Miami (and from Argentina to
Mexico also).

Now this is the problem:

Ping from Argentina to Mexico works fine, same the other way around.
SSH from Argentina to Mexico: connects, but when I try to run ps or
something else, it hangs and dies.
SSH from Mexico to Argentina works fine.
SSH from Miami to Mexico works fine also.

I'm not posting any configs since I don't really know where the
problem could be. Oh by the way, Mexico has a new ADSL (until last
week, it had a dedicated connection and worked fine).

If anyone has any hint, or needs to see any config, let me know.


Thanks

Lior.