Lots of Matrix-related questions Options

[Kincaid]

In trying to write up a FAQ regarding the Matrix for my players, I realized I had a numbers of questions myself.

1. What does Patrol IC roll for its Matrix Perception test? Is it straight Data Processing (based on the host's rating)? It does not have a Computer skill, so if it's unattended, does that mean its rating fills in for Intuition? Is it Host Rating x2 like other IC attacks?

2. If a decker is running silent and the Probe IC succeeds on its roll to determine that something is out there, if it fails on its first roll to precisely determine the decker's location, does the IC suffer from -2 dice for each subsequent attempt?

3. What counts as "the target" for a Hide action? Can you Hide from the host, as opposed to having all the IC roll separate checks? So, for example, surrounded by 3 rating 3 IC in a rating 6 host, can my decker target the host vs. (Rating 6 used in place of Intuition + the host's DP rating)?

4. Is there no rating multiplier on the cost of common and hacking programs?