I had been having trouble accessing a Dell 960w wireless all-in-one printer from my Windows 7 Professional PC, but my wife's Windows 7 laptop always worked fine.  I was troubleshooting another problem (same symptoms, but for NSLU2 network drive).  Turns out that one solution solved both problems:   http://windows7forums.com/windows-7-networking/5323-mapping-network-drive-windows-7-rc.html

Here's the content from that answer:


- Click Start
- Click Control Panel
- Click System and Maintenance
- Click Administrative Tools
- Double-Click Local Security Policy
- In the left pane, click the triangle next to Local Policy
- In the left pane, click Security Options
- In the right pane near the bottom, double-click "Network security: LAN
manager authentication level"
- Click the drop-down box, and click "Send LM & NTLM responses"
- Click OK

NSLU2 with Windows 7 Professional

I was having trouble accessing my stock NSLU2 through Windows 7 Professional, and found the following link solved the problem:  http://windows7forums.com/windows-7-networking/5323-mapping-network-drive-windows-7-rc.html

Here's the content from that answer:


- Click Start
- Click Control Panel
- Click System and Maintenance
- Click Administrative Tools
- Double-Click Local Security Policy
- In the left pane, click the triangle next to Local Policy
- In the left pane, click Security Options
- In the right pane near the bottom, double-click "Network security: LAN
manager authentication level"
- Click the drop-down box, and click "Send LM & NTLM responses"
- Click OK