can someone help me please.

I have the BITDEFENDER ANTIVIRUS free edition...it keeps saing it has trcked down hundred of threats and has quarantined them...they say I am protected but need a restart...I restart...then it starts all over again and say i have 10 threats and every few seconds it updates the number of threats until it gets to 1000, and then it starts over again....should I get rid of this antivirus...thanks in advance.