If you can't reconnect to your WiFi until you reboot your Froyo device, Wifix (lite) will probably help you. Just click the "Reassign" button, and about 8 seconds later you will be reconnected to your WiFi. You can use "Reconnect" if it doesn't work for you. There is also a "Keep Connection" checkbox that prevents your WiFi connection from been deactivated.

This release adds two new options, one to keep the CPU activate and one to keep the screen unlocked.

Wifix (lite) – Freecode

Wifix (lite) 0.5.0-0514_wifix-lite-_0.5.0.png