Can't access Motorola Milestone on Ubuntu 9.10 via adb (HTC Magic works perfectly fine)

I've two phones, the HTC Magic and since today also the Motorola Milestone.

While the Magic works perfectly, I'm not able to access the Milestone via USB (adb devices).

Here are my log outputs and settings for both:

HTC Magic

lsusb:

Bus 001 Device 009: ID 0bb4:0c02 High Tech Computer Corp.

/etc/udev/rules.d/51-android.rules:

SUBSYSTEM=="usb", SYSFS{idVendor}=="0bb4", MODE="0666"

/var/log/messages

Jan 12 20:05:44 ubuntu kernel: [  764.343311] scsi 9:0:0:0: Direct-Access     HTC      Android Phone    0100 PQ: 0 ANSI: 2
Jan 12 20:05:44 ubuntu kernel: [  764.343826] sd 9:0:0:0: Attached scsi generic sg2 type 0
Jan 12 20:05:44 ubuntu kernel: [  764.353414] sd 9:0:0:0: [sdb] Attached SCSI removable disk

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Motorola Milestone

lsusb:

Bus 001 Device 010: ID 22b8:41da Motorola PCS

/etc/udev/rules.d/51-android.rules:

SUBSYSTEM=="usb", SYSFS{idVendor}=="22b8", MODE="0666"

/var/log/messages

Jan 12 20:10:09 ubuntu kernel: [ 1028.580017] usb 1-3: new high speed
USB device using ehci_hcd and address 11
Jan 12 20:10:09 ubuntu kernel: [ 1028.731068] usb 1-3: configuration
#1 chosen from 1 choice

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Notes

• USB Debugging is enabled on both phones
• After changing the udev rules I did a "service udev reload" and "adb kill-server" -> didn't help
• I even tried to restart the whole machine. Without success.

Anyone encountered a similar problem and had a solution?

The problem is, as usual, simpler than expected. Even though USB debugging is enabled you additional have to pull down the notification bar and go to USB connection.

There you have 4 options:

• Motorola Phone Tools
• Windows Media Sync
• Memory Card Management
• None

Here you have to select "None"

After that everything works fine.