[CentOS] Putty error "Network error: Software caused connection abort"

Hi every: I have a test or development environment in my Windows workstation with VMware Workstation 8.0 where I have around 7 VM with CentOS 6.2 and each of them have 2 network interfaces: one bridge and the other NAT. Since a few days I have been experimenting some problems with Putty because I get this error:

--------------------------- PuTTY Fatal Error --------------------------- Network error: Software caused connection abort --------------------------- OK ---------------------------

I did not touch any SSH configuration so I can't see where the problem is, any help or solution to this? Cheers and thanks in advance

Ing. Reynier Pérez Mira Cel: +58 424.180.5609 / +58 416.921.7406 Correo: reynierpm@gmail.com / reynierpm@hotmail.com