Rootkit.Boot.Pihar.C

Why didn't NIS 2012 detect this infection in my MBR? It's been around at least since July 2012, and I spent 12 hours yesterday trying to diagnose the freezing and slow performance of my XP system after I had done a full scan with latest updates with no detection. I finally found someone who had the same symptoms and resolved it with TDSSKiller from Kaspersky Lab. Only as the rootkit was removed to a quarentine file by TDSSKiller did Norton detect 2 trojans and blocked them. What gives? It's not new. I've been a faithful Norton user for years, but this unbelievable hassle and time loss makes me seriously consider moving to Kaspersky.

 

Any one else had this problem?