I got my wife a Palm TX in December 2005. It worked for almost a year, then just as the warranty was about to expire the power button started getting all flaky and only working on 1/3 presses at best. It never really worked great to begin with, often requiring one to hold down the button for a second or two until registering that you pushed it. It seems that others had the Palm TX power button problem as well:
"My second device has worked flawlessly until just a few days ago when the power button problem returned. With a little research (Google: power button problem palm TX) it seems this is a very common problem. The problem is that the button is only soldered onto the board and no other mechanical connection is used. As the power button is used the solder deteriorates and the button eventually becomes useless. Any other button will turn on the palm and there are ways to power it off without the button but I still find this unacceptable. With a broken power button a hard reset is also impossible."
The power button was deteriorating and eventually became completely unbearable and as the warranty period was almost over we decided to return it in December 2006 before it became completely broken.
So we got a new Palm TX in the mail sometime in January 2007. No major problems until May 2007 when the wifi suddenly stopped working. It can't even try to connect anywhere. Anytime the radio is turned on, the Palm locks up. The only cool thing about this was watching the LCD fade slowly to white as the TFTs in the display leaked off charge allowing the backlight to shine through. I'm never seen a Palm lock up so badly that it completly disabled the LCD electronics. A hard reset reset was not able to fix this problem so it is clearly a problem with the hardware itself.
Anyways, I have no idea what we will do now. My wife can live without wifi and in fact did not really use it much before. But she'll be working somewhere this summer where there is no computer although there is probably wifi available nearby. It would be handy if she could send/receive email through GMail on her Palm TX. More than that though, we feel a bit ripped off as (at the time at least) the Palm TX was significantly more expensive than comparable models, largely because of the wifi. We are unsure whether the replacement model they sent us is under warranty (it would suck if they didn't reset the warranty for a reparied devices). It is doubtful that Palm would send us a different more reliable Palm model either, but we'll try anyways.