[lubuntu] lubuntu 13.04 keeps asking me for pasword, Help !

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http://ubuntuforums.org – so guys, im new to this, just installed lubuntu 13.04 and performed some updates through the software updater. the problem is each time i want to install a programm from the lubuntu software center, it asks me for a pasword and thats not the only thing, even if i want to acces my drive partition which are 2 partition (ntfs) it asks me for a pasword. This is annoying is there a way to disable it guyz ? (Hardware)