Airport will not connect to open WiFi network

My apartment clubhouse has unprotected wifi that my iMac can see, but wont really connect. It will connect but wont display a webpage, it will say it has no IP. If I go to advanced, and click "renew DHCP lease" i can get a IP address. but still no go. It might load half a page than nothing, and SLOOWWWWLLY at that. My neighbors, who have a PC, connect and browse just fine. ***!!!!!!!!!!

Im really lost, ive been searching every possible thing for months.

Why can a PC browse but not my Mac

Im on 10.6
AirPort Extreme FW: 5.10.91.19


Here's everything from System Profiler about my airport:
Software Versions:
Menu Extra: 6.0 (600.22)
configd plug-in: 6.0 (600.27)
System Profiler: 6.0 (600.9)
Network Preference: 6.0 (600.22)
AirPort Utility: 5.4.2 (542.23)
IO80211 Family: 3.0 (300.20)
Interfaces:
en1:
Card Type: AirPort Extreme (0x14E4, 0x88)
Firmware Version: Broadcom BCM43xx 1.0 (5.10.91.19)
Locale: FCC
Country Code: X0
Supported PHY Modes: 802.11 a/b/g/n
Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165
Wake On Wireless: Supported
Status: Off

(airport wasn't on at time)

Welcome to the Forum. Try doing 2 things to see if it helps; Firstly set up a Location - see this - in your Laptop just for the Clubhouse and find the DNS numbers for the ISP that provides the service and include those if they are not showing up automatically.

The DNS Servers are there are correct for Qwest. Im beyond stumped. Tried setting up another location, nothing.

How about going for another channel in case there is local interference.

Why can a PC browse but not my Mac

Click to expand...

because Apple tries for a better quality of connection?? Just guessing!!