Why can't OSX detect android Galaxy S for USB debugging?

Question

I searched for similar questions on this issue but found none related to Mac OSX.

Situation:
Trying to test android apps on a Galaxy S (Details below) but Mac is not detecting the device. Tried all the things below and have wondered whether this might be a driver issue (which I've heard things about for Samsung USB debugging).

Questions:
1) Are samsung drivers required for android USB debugging?
2) And are they available for Mac OSX? 3) Any other reasons OSX might not detect device for usb debugging?

Things I tried:

• Enabled USB Debugging @ Settings >> Applications >> Development >> USB Debugging
• Enabled Tethering @ Settings >> Wireless and network >> Tethering >> USB Tethering
• Set Tethered mode @ Settings >> USB connection >> Tethered mode
• Attempt to detect devices via ./adb devices (from platform tools dir)
• Verified that "Unknown Sources" is checked @ Settings >> Applications >> Unknown Sources
• Verified that device is connected to Mac
• Restarted phone
• Restarted mac
• Added various device / product ids to adb_usb.ini
• Did ./android update adb (which does adb kill-server / start-server)

Using:
Samsung Galaxy S (4G) with Sprint
Mac OSX 10.6.8
Eclipse Classic 3.7.1

Answer 1

Have you tried connecting the phone using a powered USB hub? I haven't tried it yet but found this blog post that suggests it may help for Samsung Galaxy devices.

http://esausilva.com/2010/10/02/how-to-set-up-adb-android-debug-bridge-in-mac-osx/

Answer 2

Go to Tethering select and then deselct USB Tethering and you are done. this worked like a charm.