Rounik,
I posted the problem on the (new?) Presonus forum site (presonus.com/forums) and the moderator posted the following response that, according to him, says there is no incompatibility per se, just an unwillingness on the part of the MacBook Pro to power the Firebox without first plugging it into its own wall adapter, then plugging it into the Mac, then uplugging from the wall.
See post below from the presonus form - and even though I'm getting this assurance, everyone on each forum is saying go MOTU Ultralite instead with the MacBook...
http://www.presonus.com/forums/showthread.php?t=901
cfb, the issue discussed in the linked thread is about the MacBook Pro's Firewire bus over-current protection technology... it is discussed in great detail in the thread, and only applies to the FireBox, which can be bus powered. It's not really an incompatibility as much as it is an annoyance for those who need to use the MacBook Pro and the FB when they are reasonably far away from any outlet or extension cord. The MacBook pro line (used to be only the 17"s and now including the 15 inch) has this overcurrent protection where it senses the amount of power drawn from the firewire bus, and when the power approaches the maximum, the MacBook Pro shuts it down. This apparently new specification for the MBP's means that if you want to use your firebox without the included power supply, you still have to plug in the power supply for the firebox first, then your firewire cable. After this initialization, you can unplug the FB power supply and ride on free bus power from the MBP.
The people in this thread seem to be doing a lot of mobile recording. Apparently, they find themselves in places that are curiously distant from any source of electricity, and/or they have discovered that bringing along the firebox's small dc adapter to their mobile recording locations is just too much of a hassle.