Weard Connection Problem

I am getting this very weard Error. 500 OOPS: priv_sock_get_result, i don't know how much of you have encounterd this one.
I am connecting to two servers at the same time, what bothers me is one of the connection is going swimingly fine, but the second one throws this error.

Plz guide me with this, ASAP i will be thankful.

[08:04:34] SmartFTP v2.5.1006.5
[08:04:34] Resolving host name ""
[08:04:34] Connecting to Port: 21
[08:04:35] Connected to
[08:04:35] 220 Welcome to safesecureweb.com FTP service.
[08:04:35] USER username
[08:04:35] 331 Please specify the password.
[08:04:35] PASS (hidden)
[08:04:36] 500 OOPS: priv_sock_get_result

Its a problem on the server side. Please contact your web hosting provider for assistance.