Hello,
as posted in a different thread, the 10.7.2 Combo updater does NOT fix anything for a majority of users having the WiFi + Bluetooth interference bug !
Folks,
I had a 1hr appt at the Genius bar with this same issue, where if Bluetooth is on then WiFi becomes less stable, to the point of dropping packets or the entire connection to a WiFi access point at one of my offices.
my MacBook Air 11" was purchased the first week they became available, and has had the Bluetooth/Wifi bug problem since Lion 10.7.0. No amount of firmware updates, 10.7.2 combo installer or re-installer or resetting Prefs files has remedied my problem.
after 1hr at the Genuis bar (with a genius who actually has the same bug on his iMac !) and rumors of a "Logic Board replacement" fixing the problem for some user (different Apple Support forum) Apple gave me a brand new MacBook Air 11" off the shelf.
We compared EVERYTHING within the System Reports side by side-
there was no difference in the firmware, bluetooth chip versions, drivers, Wifi chips, etc.
Everything was the same.
I left the store with the brand new MBAir 11 to return to my work environment where the Bluetooth/WiFi issue occurs, restored no information from TimeMachine- and the WiFi signal degradation problem STILL happened.
Stock apple machine, OS X 10.7.2, no third party software in sight.
Apple Genius and Store have no further actions they can take. sigh.
So the obvious Bluetooth + WiFi conflict lives on, and until Apple provides some REAL driver updates or firmware for these new bluetooth/WiFi chips on modern MacBooks, we'll all just be stuck with:
Turn Off Bluetooth if you want to ensure accurate WiFi traffic and signal connections.
Wake Up and Fix This Apple!