I have working Wi-Fi connection. I can connect to any access point in range and I have no problems with passwords, etc.
But after some time (sometimes hours, sometimes days) my phone tries to connect to access point and it fails. In Wi-Fi settings I just have "Błąd" message which in English means "Error". Then I cannot connect to any network, I'm not eve able to scan available networks - Wi-Fi is totally dead.
When I reboot phone it starts to working normally again.
My phone specs:
Samsung Galaxy 5 GT-I5500 Android 2.2 - FROYO.XWJQ3 I5500XWJP4