I've been having this problem since around 12.04. I just did a fresh install of 13.10 with a dual boot of Windows 7 and the problem still exists.
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Unhandled error message: Timeout was reached
If I wait about 10 seconds and press Browse Network again, it will work fine the second time in.
Any ideas on how to fix this issue?
Add this to the [global] section of the /etc/samba/smb.conf
netbios name = <hostname>
name resolve order = bcast host
Then either restart the smbd and nmbd services or reboot the system.
You should now be able to browse the network shares.