Having the N900 for about 2 years now... Gone through some real rough handling (no thanks to me) and I can tell you, that bladdy brick is looking as pristine as ever. Gotta give it to Nokia for some of the best hardy hardware I've ever seen on a smartphone.
A reflash should always solve a software problem. Kernel power should not be an issue. If it is, then the logical solution is to not install it, run it and see if the problem still persists. The batterypatch by karam does have mixed reviews by different users so I also recommend you install it without anything else installed and test run it for a week to see if it still persists. If not, then that should eliminate that as an issue. If neither one of these works, then it's a hardware problem i.e. battery.... or your device is just faulty...

Good luck

Thanks for all the answers. i'm hoping that it is the battery's problem. have done the full flash to factory out of the box state. still the same thing happens

My N900 just went out of action..

Yesterday I think something was wrong with the eMMC,
All my QueenBeacon widgets arent functioning and Media player shows no music and video.
But I can still find stuff on eMMC using file manager.

Then today morning, my N900 cant boot up.
Press powerbutton, shows Nokia hands, then shut off by itself.

Darn..

Nothing much, just my homescreen out of six showing the media widgets.

[attachmentid=2668730]

Showing all six. Wallpapers hasn't changed, but now using the Harmattan (N9) icons pack.

n900 getting boring... now new stuff and at time its multi taking capability is questionable... damn u nokia for giving us a goof phone and then dissing it....

I got a simple question, for those installing nitroid, is 8MB class 6 (6mb/s) microsd card enough for it?

this club seems dead... comon any news about N900?

my n900 showing sign of problems.... suddenly no sim card. then suddenly got signal but cant call out or receive... time to change....

my best shot for Danbo by zdentws, on Flickr

One of zdentws best shot taken by his Nokia N900

i have Fcam installed, how do i trigger to switch Fcam instead of the default camera software when i slide open the camera cover?