Waking from sleep requires Forced Shut Down on two different g4 iBooks

Two different iBooks, a 12" 1.33 and a 14" 1.42 . Same behaviour on both iBooks.
Each is running 10.4.4, Each has 1g RAM. Neither have any unusual third party software or hacks. Both exhibited this behaviour prior to 10.4.4, and both had 10.4.2 as the original install, then 10.4.3.
Both go to sleep after three hours, display is set not to turn off before then. They will operate properly for days at a time, but approximately once or twice per week they will have gone to sleep normally, the white light blinking. I'll tap the keyboard to wake up, and the white light will stop blinking but nothing else happens. The cd drives don't make their usual start up racket, nor does the hard drive or fan spin up. Only doing a "Forced Shut Down" by holding down the power button and then restarting will bring either one of them back to life.
I have already Reset the PMU several times over the past 6 months with no change in behaviour. I have also reset the PRAM on both units sucesfully, however that also has not changed the behaviour.
Were this happening on only one iBook, I'd consider it a fluke, but having it happen on both a 12" and a 14", and having read of the others with the same isssue leads me to believe that it is not a unique issue, and is either a hardware or software flaw. Since the advice in every one of these complaints has been rest the PMU and Reset the PRAM, and since this has failed to correct the situation, I'm curious as to whether there is anyone on thes Forums that has knowledge of the problem and a proper fix.
As the issue is truly random and can not be duplicated on demand by manually putting the machine to sleep the "geniuses" have as yet not provided a solution. All I would like is an acknowledgement that there is an issue and that there is hopefully a fix in the works. Even just an acknowledgement that, "it sometimes happens" would be helpful.
Sorry for the long rant, but I keep seeing the same issue brought up over and over again, with the same non-solutions. Any other suggestions or clues would be very much appreciated.
ibook G4 1.33ghz 12, 1.42ghz 14 Mac OS X (10.4.4)

Nothing, No one..... So out of the hundreds of thousands or perhaps millions, of iBooks sold in the past year, I somehow managed to snag the only 2 that display this problem. Those odds are staggering. A 12" 1.3G4 and a 14" 1.42G4, purchased two months apart. Both in the original factory state, and they both display the same sleep issue, and yet somehow this is unique to my experience.
The sarcasm is intended, and after having to do a forced restart, and then wasting an hour running tech tools to make sure there are no disk issues for the third time this week, this is getting old. I'm not asking anyone for a magical fix, all I'd like is confirmation that the issue is being investigated and will hopefully, eventually be resolved.
Thank you......
ibook G4 1.33ghz 12, 1.42ghz 14 Mac OS X (10.4.4)

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Before Resetting the SMC
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The iMac works perfectly and I can put it to sleep just fine. Later on I can tap a key or hit a mouse button and the machine wakes up. However from that point both the keyboard and mouse are unresponsive, I will get the screen pop-up message telling me that the keyboard and mouse are disconnected, the bluetooth icon in the menu bar is crossed out but the machine itself has not crashed, the clock continues to click up, I have an animated desktop background which continues to play and if I plug a standard USB mouse in, that works.
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OK obviously tempted fate by posting, the bluetooth problem has returned!
While awake both the keyboard and mouse connections are rock-solid, on startup, both connect instantly it's just waking from sleep that's the issue.
I had the problem just a few minutes ago, the Mac had been asleep for about 30 minutes, I tapped the mouse and it woke up, I could even move the mouse pointer around for a few seconds and then it suddenly froze. The Connection Lost message (for the mouse not the keyboard) appeared on the screen and the bluetooth icon in the menu bar changed to the 'no connection' sign. If I flip the mouse over the little green led doesn't come on.
After about ten seconds the bluetooth icon changed to normal and the mouse worked-for about two seconds then the whole cycle repeated. This happened three times, the mouse worked for a few seconds, the connection dropped and I had to wait about twenty seconds for it to come back to life on its' own. I tried the volume up and down on the BT keyboard but that wasn't working either. On the third time of dropping, the bluetooth assistant fired up telling me that there was no keyboard attached, just as the mouse resumed working on it's own. It searched for a keyboard, told me that it couldn't find one and then immediately told me that a keyboard was attached and no further action is required.
And from that point on both have worked perfectly. If it was just the mouse or the keyboard, I'd suspect that was the problem but I find it hard to credit that both would fail at the same time.
Well I'm now officially stumped. Surely it's inconceivable that a failing BT module would not work on waking but be perfect all the rest of the time?
Any ideas or suggestions would be gratefully received.

Waking from sleep requires Forced Shut Down on two different g4 iBooks

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