WLAN USB stick assembled successfully to my Ubuntu Apache server. It also automatically connects to network after reboot. Thanks developer guys, greate work from you.
But I have found some strange behaviour: Ubuntu needs wired ethernet cable connected for a while (eg for a "ten seconds"), before Apache server / VNC server accepts connections through WLAN interface. After rebooting, WLAN comes successfully up, but eg apache does not accept www page load commands, until wired ethernet cable has been attached (and then it immediately can be removed). Actually my client computer sees the server immediately through WLAN, but returns "server reseted connection. Server may be busy" fault.
I am wondering, whether this has something to do with some module loading (together with wired Ethernet activation) or whether this has something to do with some kind of user rights. Just for the sure: To be able to use apache or VNC server after reboot through WLAN, I just have to physically connect ethernet cable for a while. Nothing else. I have repeated this behaviour several time and with different waiting periods.