By renewed do you mean updated? (McAfee needs to check for updates every 4 hours so your internet has to remain connected for it to function correctly). Also how is it crashing, it it 'this web page has to close' or similar? Is this Vista SP2 and what version of browser(s) is/are installed and which one do you use? Also how do you connect to the internet?
Kindly provide us with more details on the issue;
What version of Internet explorer – (Open IE – click on Help – Click on About Internet explorer)
Open McAfee security center, click on About and let us know -;
McAfee Security center
Aff id :
McAfee Site Advisor :