Why does Wifi show an error whenever I try to reconnect (Galaxy Ace)? I'm using a Galaxy Ace.  When I turn off WiFi and try to turn it on again it shows an error.  I need to restart my device for it to work.  Any ideas?
I believe this is a problem with Samsung's UI, TouchWiz; I experienced this on a couple ROMs for my Galaxy S.

I don't know of any way to fix it without replacing your ROM, but I did find that going to Settings -&gt; Wireless and network -&gt; WiFi settings and toggling WiFi there seemed to work.  Settings is a standard Android OS app and thus bypasses whatever problem TouchWiz has when you try to toggle the WiFi from the notification area.