Can't connect to SAMBA printer with hostname

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http://askubuntu.com – I'm in a college setting trying to use the printer connected to my desktop PC (running Windows 7) with my laptop running Ubuntu 12.04. Here's a few preliminary details; Host computer (Windows) name: Alex-PC Printer share name: 332 Workgroup name: WORKGROUP Network security: WPA2-Enterprise Encryption: AES In the recent past (last few days) I've had it working just fine. I added the printer via the SAMBA option and entered the following in the field; smb://Alex-PC/332 and it worked perfectly and consistently for a few days. Just recently, that's stopped. It always works if I enter the IP (HowTos)