Flashed my device with global FW,yet I am still getting 'device memory full, cannot send\recieve sms'. Also, all of my contacts are missing, and all my backups. All this,aswell as random reboots and, when it does, all my background images dissapearing. A restart stopped the 'mem full' message,but hasn't cured anything else.
Anyone got a clue?

Cheers.

You've had this problem for a long time. Have you tried any of the other suggestions made in previous threads?

Yeah, but that advice mainly pointed to flashing,which I've done. But seeing as this only cured the problem for about 2 days, I was hoping someone would have another idea?

P.S. Also alot of these symptoms are new i.e lost contacts/backups. Also a restart normally cures the backgrounds issue.

Did you try cpitchford's advice?

Have you also flashed the eMMC?

Maybe it's something you install after you flash that is causing the problems.

I haven't tried that yet,no.But only because I thought that the problem probably goes further than that,what with the random reboots etc?
Not flashed the eMMC, no. Is that advisable?
I haven't installed anything after flash outside of maemo extras repo.

Random reboots is worrying but I would take a good look at all cpitchfords advice as he/she is very determined when dealing with problems and appears to have the patience of a saint (helps a lot on the nokia forums).

Flashing the eMMC has cleared many persistent problems before, you just need to bear in mind that none of your data will be saved so make sure that you have good backups.

cpitchford's advice hasn't worked for me.

On my device now I can't run any applications,open any files/messages etc. Every time I attempt it the yellow error bar comes up saying 'Close Applications'. I should point out that this was happening before i tried the xterm commands post by cpitchford.

If i do have to flash the eMMC, I now have the problem that I can't get at any backup files I've got to export them and make them safe from the flash.

If you connect the device to a PC in mass storage mode you'll be able to access and copy backups from the backups folder; if you've setup SSH you can find the backups in /home/user/MyDocs/backups.

Before you start flashing everything, consider removing your SD card and see how the device behaves without it... That said, I think your only hope in this case is a complete reflash.

Something is not right here as you are saying you cannot get to your backup files so what did you do to do a backup?.
If you use PCSUITE the backup is on your pc not on the mobile and even if you did a backup using the N900 utility it would give you the option of where to save that and the obvious place is in fact your memory card, having said all that a flash would not clear anything from your memory card and not even an emmc flash would do that.
So this is very confusing what your saying.
Incidently IF you flash with the leaked fw you will not have the "enough space in rootfs problem"
Me thinks your not flashing correctly.

Isnt it amazing how many people are having problems with either losing or finding their backup's.
It is all too easy to just flash regardless of making sure you got at least one backup somewhere on your pc and it is said everywhere to do a backup before flashing so the mind boggles as to why people just flash without backups.
Incidently many of the apps developed on this forum are the very reason the os is screwed up because they are just not written properly and not enough care is taken to check out the installs for damaging results to the os of the N900.
Many if not all of the "rebooting" problems are due to the dangerous apps on the download section of this forum and the only way to correct them is as you say a proper complete re-flash.
The mind boggles as to why it is not pointed out on this forum the actual danger of some of the apps available.