macbook air lion 10.7.3 wifi issues

I have a macbook it can connect to any wifif that does not have a password. but at work there is a password I connect put in password then it times out. Any ideas how to resolve?
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luke_brannonConnect With a Mentor Commented:
Your work may use what's called MAC filtering. Not MAC in the sense of your computer manufacturer, but MAC in the sense of your computer's MAC Address. Every network adapter has a unique MAC address, and your IT personnel may need to add your laptop's MAC address into their wireless security system.

Do you have another wireless device you can test on your company's network (like another laptop, an iPhone, iPod Touch, Kindle, etc)?
What kind of wick sec does your work use; WEP, WPA, WPA2 or 802.1x?
Did your office have MAC filtering enabled? Is that what was causing the issue?
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