In my LAN, there are 4 PCS. My PC is Ubuntu, others are Windows XP SP2. To share files between us, I installed Samba. In the network places, i can see others PC as well as mine. But when i click on it, it shows a popup "Unable to retrieve the share list from server". I dont know how to access them. I couldn't see even my PC in the network folders. It say the same above message. Previously i successfully shared files with the same Ubuntu, same samba, same config.
Please tell me to trace the solution. From where i have to check.