Sensors-applet uses /dev/sdX to reference disks, which changes on reboot

Binary package hint: sensors-applet

Harddisk temperature monitoring references the disk using "old" /dev/sdX identifiers. As much as it hurts me to call this "old" behaviour, i haven't been able to find a way to make /dev/sdX persistent on reboots. Whenever I start the system with some USB/eSATA disks attached, the device names are perturbed and sensors-applet doesn't report correct temperatures anymore.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: sensors-applet 2.2.7-2ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Mon Jun 20 13:37:22 2011
InstallationMedia: Xubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: sensors-applet
UpgradeStatus: Upgraded to natty on 2011-05-11 (40 days ago)