Android Phone: DHCP request although static IP configured

I face a strange behavior while connecting to WiFi with my Android phone.
When I configure the WiFi settings to use a static IP at home with a  Speedport router from Telekom everything works fine. I get a connection  imediately. (Security credentials are WPA2-PSK/AES).
But when I try to connect to a Cisco environment (1142 access points  with 5508 controller with the same security credentials as at home)  after PSK authentication the phone start with DHCP requests instead of  using the configured static IP and I don't get a connection.
First I thought it was of the Android ROM or the device but I tried different  ROMs (stocks and customs) and different devices (Defy and Galaxy S).  Everytime the same thing.
A laptop or an iPhone can connect without any problem using a static IP.
It seems that the controller or AP sends something to the phone telling it to ignore the static IP settings...
Strange!!!

When you set static IP information on an adapter that disables DHCP for that adapter. It no longer communicates with the DHCP server. The only thing that can go wrong at this point is the IP information you are specifying on the adapter is misconfigured. Don't forget that in static ip config you need to also specify DNS servers.
The DHCP server may or may not detect the static IP on the network depending on the DHCP Server software.
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Linksys
Communities Technical Support

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