HTC desire .. FAULTS .. A great phone turning into a huge deception

Unfortunately I feel I have to write about this topic as to publish my experience with my HTC desire phone since many of you may consider buying one, or because it was released a few months ago and is probably already a too old model, you maybe facing the same or similar troubles as me, then I am sharing my disappointment..

I bought this phone in April, not even 6 months ago, it was a planned decision as I had thoroughly looked into several models before I decided to buy this one.

It was absolutely alright for the first 3 months, with the exception of the battery that would not last a whole day if I would be using the phone for a bit more than phone calls, like to play a game or surf the web. In those cases it was like taking the phone from the charger at 8.30am and then at 8.30 pm it would be switching off, death without any battery, but ok..

Then it comes the SERIOUS problems..
first the volume rocker wouldn't allow me to decrease the volume but only increase it.
This fault was followed by the "track ball" button not working at all as for opening an app for example.
Then on top of that the phone started to switch off by itself without a reason! From time to time, once or twice a week I would find out that my phone was off inside my bag although I didn't touch it or it run out of battery. I would restarted and it would work normally except for the faulty buttons..
Following these already very annoying faults, it came the worst one: the automatic rebooting!! Basically that consisted of every time I was starting the phone it would go into a loop of booting without stopping, unless I just press the track ball button during the booting process (something Pedro discovered). On top of that this would also happen spontaneously, as like my phone being on my desk and all of a sudden starting the rebooting loop non stop! Freakish right?

Confronted with so many faults and trouble I went to the Vodafone shop where I had bought it from and it was sent for repairing.
It took a month before it was ready and today I went to the shop to get it back, where I was told that it was a big fault and basically all the hardware had being replaced and I was getting a "new phone".
I came home, charged the device, then switched it on and it seemed to be alright.

track ball working - check OK
Volume rocker - check OK

didn't do any of the freakish stuff.. - OK

but when I was reinstalling my apps, probably just 30 minutes after switching it on the volume rocker stopped working as well as the track ball. I tried to restart the phone and all I got was a white screen with some sort of "code"!! and it was totally frozen! Now I can't reboot it, it just shows that white panel with code and nothing else, nothing works at all!!!
How frustrating and disenchanting is this? I am really pissed off with this phone and it is very unlikely I will ever buy another HTC in my life!

Besides, after this happening today I browsed the internet for similar problems with "HTC desire" and found an enormous number of people complaining about the same problems!!!

I question.. is it only about doing fancy phones... that last what, 3 months?? We are yet there, I believe...