No volume detected on USB key

[Dik Takken]

Hello,

I have been trying to upgrade from HAL 0.4.x to 0.5.x (0.5.5.1 to be 
precise) but I ran into the following problem:

When I start hald with my USB key plugged into the computer, HAL detects 
the device perfectly. But when I plug the device in *after* hald is 
started, HAL only detects a block device (/dev/sda) and not the volume on 
it (/dev/sda1). Manual mounting of the volume /dev/sda1 works perfectly, 
but hald complains that there exists no volume /dev/sda1.

One more oddity I noted: HAL sets the 'hotpluggable' property of the USB 
key to 'true' when the device is plugged in *before* hald is started, 
while the 'hotpluggable' property is set to 'false' when the device is 
plugged in *after* hald has been started.

My system: Gentoo Linux on x86.

How can I solve this problem?

Cheers!

Dik