New MacBook Pro 17" i7 - Bluetooth & Audio Interface (via FW) problems

Hi everyone.
I have a couple of really annoying problems with my brand new machine!!
(a) Wireless Apple Mouse & Wireless Apple Keyboard. Both pair up fine and function normally, but after 20-30 mins of use they drop in and out and the mouse becomes very slow and jerky, keyboard becomes slow and I get double keys etc. I have changed both sets of batteries and am running the latest firmware. If I unpair and repair then this doesnt fix the problems, the only way to fix them is to re-boot. After re-boot they funtion properly for another 20 mins and then display this problem again!
(b) I cannot connect my Focusrite Saffire LE FW audio interface properly to the FW800 port. When I connect it and the audio switches from core audio to the device I get the beachball of doom and I cannot play any audio in Itunes / quicktime etc. The beachball only disappears when I take out the FW cable and the machine switches back to core audio drivers.
The strange thing is that I also have a uMBP 13" (2009) model and none of these problems occur on this machine. The bluetooth devices work flawlessly and the Audio interface acts properly as well.
This is my 3rd replacement laptop this week, and it has occured in every replacement I have so it is definately not machine specific (had to return them for other issues!)
I have been through these problems with Apple and the techies are now looking into this.
Just wondering if anyone was experiencing these two kinds of problems with the new models of MBPs?
Thanks!

Update on the problems.....
(a) According to Apple it's a 10.6.3 problem and the engineers are working on a solution to come out in 10.6.4 - VERY annoying.
(b) The FireWire Port on my new MBP wasnt putting out enough power to power the FW unit...... I have had to buy a AC adapter for it and power it that way..... working fine now...... I wonder if they changed the power out in the new MBPs for the FW port.
Thanks to the previous replys, and no I havent got it paired with my other mac.
Sounds like the same problem as Dirk is describing.....

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New MacBook Pro 17" i7 - Bluetooth & Audio Interface (via FW) problems

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