Question : W3WP.exe uses 100% CPU at some times.

I have a asp.net (2.0) application running on load balance between 2 windows 2003 SP2 with IIS 6.0.There are 4 worker processes running in each machine. Application does allow image upload and McAfee Enterprice 8.7.0i is installed both the servers.
W3WP process uses 100% within couple of minutes and does not recycle even if the application pool is set to recycle when cpu usage goes above 80%.
Please advice to find the what causing this problem..
Thanks in Advance.

Answer : W3WP.exe uses 100% CPU at some times.

According to this: http://www.newegg.com/Product/ProductReview.aspx?Item=22-136-489&SortField=3&SummaryType=0&Pagesize=10&SelectedRating=-1&PurchaseMark=&VideoOnlyMark=False&VendorMark=&Page=1&Keywords=2008

Windows Server 2008 is not supported...doesnt really make sense to me though.