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does this site contain a virus? avast says it does ???

Contains something strange, which is definitely worth detecting. Why exactly are you asking?

because my IE keeps -somehow in a hidden way- openning this page ??? ???

You are not the one infected - Maybe -
SO check this topic it is the same virus/spyware

hxxp://fahryhadikusumo.wordpress.com/tag/arp-spoofing-solution/

change xx for tt ofcourse

if u need anything else pm me

thnx ;D