Why my Mac won't connect automaticly to Wifi from boot or when waking from sleep?

Hi!
I have 2TB Time Capsule with bridged WiFi.
When I reboot or wake up my MBP from sleeping it won't connect automaticly to my Home WiFi network. I allways need to connect by hand. This problem has been in the Os X Lion and Os X Mountain Lion.
Any other WiFi networks don't have this problem, only with Time Capsule.
Time Capsule has 7.6.1 software and also older software's had this exact same problem
My MBP is:
2.3GHz Intel Core i5
8GB 1333 Mhz DDR3
And the WiFi chip is:
Card Type: AirPort Extreme (0x14E4, 0xD6)
Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.81.20)
Does anybody else run in to this kind of problem?
Oh and everything else with WiFi is working normally (Phones, iPad's etc even PC's =) )

I was having this same issue with a brand new 2012 MacBook Air after updating to Mountain Lion and using an AirPort Extreme. Most times waking from sleep would result in a lockup as the system would continously try to find my network (the WiFi menu would just keep cycling). After going to 10.8.1 it still continued so I started looking at other possibilities. I noticed that the security setting on my AirPort Extreme (current generation) was set to WPA/WPA2. I changed it to WPA2 and the problem so far (2 days in a row) has gone away.

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Why my Mac won't connect automaticly to Wifi from boot or when waking from sleep?

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