These are good theories, but I would tend to refute them in both cases.  
First of all I now know that the system is behaving in exactly the same 
way for the old and the new memory.  About an hour into a backup today I 
got a spontaneous reboot.  This is with the original memory.  In most 
logs I can see this reboot happening at 14:36:18 today.  I see nothing 
in any log in the time immediately before this to indicate a problem.  
I've checked messages, syslog, kern.log, dmesg, and daemon.log... I see 
nothing just before that.

I will do the load test however and tell you how it goes.. I can get a 
multimeter.


\


Pedro M. S. Oliveira wrote:
> No, it was the RAM, I haded 4 hard after putting the new RAM it still 
> works like a charm.
> If it was a power matter the server would not work right with the 
> extra consumption, and the machine as two power supplies.
> And i didn't told but the ram was ECC.
> Just changed it the RAM stick and it worked just fine.
> Cheers
> Pedro
>
>
> On Friday 02 January 2009 15:41:23 dan wrote:
> > That doesnt sound like faulty RAM was the base issue. It sounds like a
> > buggy power supply, which can slowly degrade system components. The 
> RAM may
> > have been stressed by bad power and reached a point where it would no
> > operate properly when the voltage fluctuated. Replacing the RAM may 
> just be
> > putting in new RAM that can handle the power issues for a while. You 
> could
> > see another component fail for no apparent reason if it is indeed 
> the power
> > supply. You should really consider doing a load test on your power 
> supply.
> > There are some guides online for this, it can be done with a 
> multimeter and
> > something to put a load on the system like a TEC attached to a rheostat.
> >
> > This is one good reason to use ECC RAM. The error checking circuitry is
> > designed to function well outside the tolerances of the RAM it is 
> attached
> > to.
> >
> > On Fri, Jan 2, 2009 at 5:38 AM, Pedro M. S. Oliveira
> > <pmsoliveira AT gmail DOT com>wrote:
> >
> > > The same happened to me and the strangest part is i could compile the
> > > kernel, and do all the memory tests just fine, as you i also had 
> new ram so
> > > after changing lots of things like network cards, removing 
> hardware and so
> > > one i changed the ram (the ones that all the tests said it was 
> fine) and
> > > voilá... it started working like a charm.
> > > The curious is it just stopped working while doing the backups, I 
> manage
> > > several hosts ones with tar, other with rsync and some others with 
> samba.
> > > I think the memory would only stop if working under stress for a 
> long time
> > > (as the kernel compilation does) but with the kernel compilation 
> maybe it
> > > wasn't long enough. As backuppc uses compression, encryption and 
> high IO for
> > > a long time it probably stresses the computer more than the kernel
> > > compilation.
> > >
> > >
> > > Probably the same is happening to you.
> > > Cheers,
> > > Pedro
> > >
> > > 
> ----------------------------------------------------------------------------------------------------------
> > > Pedro M. S. Oliveira
> > > IT Consultant
> > > Email: pmsoliveira AT gmail DOT com
> > > URL: http://pedro.linux-geex.com
> > > Cellular: +351 96 5867227
> > >
> > > 
> ----------------------------------------------------------------------------------------------------------
> > >
> > >
> > > On Friday 02 January 2009 04:00:59 Gene Horodecki wrote:
> > > > I've been backing up my house with backuppc a very long time and 
> never
> > > > had any problems. I was using the rsyncd method, but a couple months
> > > > ago it dawned on me that I wasn't getting all the files because of
> > > > permissions so I switched to the ssh/tar method and it continued 
> to work
> > > > just fine.
> > > >
> > > > However, over the last little while things have stopped working. 
> I have
> > > > three 'hosts' that go overnight and not one of them works. With the
> > > > ssh/tar method I get 'unexpected end of tar file' and with the 
> ssh/rsync
> > > > (as opposed to rsyncd) method I get 'Got fatal error error 
> during xfer
> > > > (aborted by signal=PIPE)'
> > > >
> > > > It almost seems to me like ssh is dying. To make matters worse,
> > > > sometimes it takes my entire system down with it and spontaneously
> > > > reboots. I do notice ssh using up almost 80% cpu while the backup is
> > > > going but otherwise I don't see anything abnormal, other then 
> the system
> > > > going away...
> > > >
> > > > I've done the following two things in the last month:
> > > > 1) increased my RAM from 1G to 3G
> > > > 2) upgraded from ubuntu 7.10 to ubuntu 8.10
> > > >
> > > > I just tried upgrading backuppc from whatever version I have to the
> > > > newest one, and it's still doing the same thing. Please help??!?
> > > >
> > > > Thanks.
> > > >
> > > >
> > > >
> > > 
> ------------------------------------------------------------------------------
> > > > _______________________________________________
> > > > BackupPC-users mailing list
> > > > BackupPC-users AT lists.sourceforge DOT net
> > > > List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
> > > > Wiki: http://backuppc.wiki.sourceforge.net
> > > > Project: http://backuppc.sourceforge.net/
> > > >
> > >
> > >
> > > --
> > >
> > >
> > >
> > >
> > > 
> ------------------------------------------------------------------------------
> > >
> > > _______________________________________________
> > > BackupPC-users mailing list
> > > BackupPC-users AT lists.sourceforge DOT net
> > > List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
> > > Wiki: http://backuppc.wiki.sourceforge.net
> > > Project: http://backuppc.sourceforge.net/
> > >
> > >
> >
>
>
> -- 
> ----------------------------------------------------------------------------------------------------------
> Pedro M. S. Oliveira
> IT Consultant
> Email: pmsoliveira AT gmail DOT com
> URL: http://pedro.linux-geex.com
> Cellular: +351 96 5867227
> ----------------------------------------------------------------------------------------------------------
>  
>
> ------------------------------------------------------------------------
>
> ------------------------------------------------------------------------------
>   
> ------------------------------------------------------------------------
>
> _______________________________________________
> BackupPC-users mailing list
> BackupPC-users AT lists.sourceforge DOT net
> List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
> Wiki:    http://backuppc.wiki.sourceforge.net
> Project: http://backuppc.sourceforge.net/
>   



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