Can not conect to remote roscore running on ros-fuerte-ros-comm

edit

I have a vaio in wich is running an ubuntu 10.11 with ros-fuerte-ros-comm installed. And im trying to use it as a server for the roscore.

Im trying to connect a virtual machine,on another physical computer with virtualbox with ubuntu 10.11 installed on it and ros-fuerte-ros-desktop-full. I run roscore in the vaio, and it seems to work perfectly, but when i run :

rosrun turtlesim turtlesim_node from my virtual machine

I get this error:

1348840863.367236742: [registerPublisher] failed to contact master at vaio:11311

I have checked the tutorials, im able to connect each machine by ping and ssh. Virtualmachine Bridged. I have my $ROS_MASTER_URI=http://vaio:11311 I check tcpdump in the vaio and i see messages posting from the virtual machine when i try to run the turtlesim_node.

I think that is a problem with something in the vaio because i tried to connect an ASUS PAD, with some ros nodes implemented on it, in software that i have, that was already able to connect to a rosmaster on another computer in my lab (This is already tested) but wasn't able to connect it to the vaio either.

I will really appreciate any help, I have been with this three days already, im used to working on linux but i have only been working with ros for one month.

Thank you for any help!