@Andezzar: From the table here.

A 684

The Hide skill specifies movement relative to your speed. Only movement which changes your square is dependent on your speed.

A 685 Yes.

Jotunbrud's benefit applies to any opposed roll, and Intimidate requires such a mechanism.

A 686 No.

Pounce requires that you use the Charge (special full-round) action. Spring Attack stipulates a move action split around an attack. These are incompatible action requirements. Bounding Assault will give you an extra attack when you use Spring Attack; Pounce will give you potentially several extra attacks when you Charge. There is no combination which will combine these extra attacks.