Can't turn off WiFi

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http://forum.xda-developers.com – Hi folks, I have a problem with SXP on stock .54 FW. Sometimes I just can't turn off WiFi. Actually, I click toggle button, it goes to the 'off' position, but after a second goes back to 'on'. What is more, I can't turn on/off mobile data when WiFi is on. No mods, just rooted, but happend also before rooting. (HowTos)