Ubuntu 12 .04 wifi reconecting

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http://askubuntu.com – I have instal ubuntu 12.04 and and cant connect to my home wifi whne i create wifi htospot on my galaxy s3 i dont have any problem but when i connect to my wifi i write password and it still reconecting but wont connect and after 1-2 minute ask again for password. Can anyone help ? thanks (HowTos)