Though this to me seems like no problem at all as I have had no problems, I still want to ask.
Once I scan my laptop with one of my on demand scanners (MBAM, SAS, Hitman Pro) when I look in Norton Internet Security's security history, I always see a medium alert logged noting that an attack on Norton's program by said on-demand scanners has been blocked. I have been ignoring this as I have seen no problems come from this. To me, Norton just doesn't like being scanned by my on-demand scanners. Am I right to ignore this, or should I be concerned?
Protection: Norton Internet Security 2011 Aggressive Heuristic, Boot time, and SONAR
On demand: Hitman Pro, SuperAntiSpyware