USB hub weirdness both after upgrade to 10.5.2 and again after iTunes crash

I have a powered 7-port combined hi and low speed USB 2.0 hub from Trust, with all kinds of things attached. I plug it into to my MacBook (late 2007) whenever it's on my desk.
Attached are a copyright protection device from Steinberg, a mouse, a printer, a harddrive, and iPod nano and an audio interface.
To my own surprise, all this has worked very nicely for months. Even recording audio went pretty well, although sometimes I had to plug in the audio interface directly to avoid latency. Timemachine worked flawlessly, doing it's job every time as soon as I plugged in the USB cable.
But not after I updated Leopard from 10.5.1 to 10.5.2.
The first thing that happened was my harddrive not being visible anymore, unless I plugged it in directly. I thought this was done on Apple's purpose, in order to create no false sense of reliability, and paid no extra attention to it.
But two days ago, after giving a second sync command in iTunes while the iPod was already syncing, iTunes got stuck.
Since then, I get the message that the iPod works better if I plug it into a Hi-Speed USB interface. Which it indeed does if I plug it directly into my MacBook.
Now, however I configure everything, start things up, power and unpower things, a look on my system profile reveals that Mac OS thinks that the hub is low-speed only.
Strangely, this is also true for my wife's MacBook, which runs Tiger, while my PC at work, which runs Windows XP, still sees it as a high speed device.
Another maybe even stranger thing is that now, my external harddrive is being recognized again by Leopard 10.5.2.
So these are the implications:
Looking at it's behavior with Windows XP, it appears that the hub can still be recognized as a high speed device. This suggests that it's not broken.
Then, looking at it's current behavior with my wife's Tiger MacBook, it must never have worked in high speed under Tiger, either
Also, both it's high speed and device recognition capabilities have changed between Mac OS X 10.5.1 and 10.5.2
Also, a bug in iTunes or iPod has change that again.
Can anyone confirm any of these implications, or tell what's going on and what I should do?

Hi Drgeert-
The hub may not be broken per se, but Apple has made adjustments to the limits on current that can be drawn from ports.
You probably need a new hub.
These may be helpful and/or interesting:
USB: High Bandwidth and Isochronous Devices Must Be Separated
USB Product-Specific Details
Luck-
-DaddyPaycheck

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USB hub weirdness both after upgrade to 10.5.2 and again after iTunes crash

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