habe eben dies bei esato entdeckt:
"After the upgrade of the p900 to R3a, I found two new folders on the phone
Pictures/Sony Ericsson
Video/Sony Ericsson
under these folders there are:
two UGLY pictures to use as backgroung for flip open and flip closed
one "Spin Doctors" MP3 excerpt
Ok I told to myself, open file manager and delete this shit and the folders...
NO WAY.... they seems to go away but always returns after a power on, more... when I delete the file the OS say to me "file managed by DRM" (Digital Rights Management)... more 2 impossible to delete the folders... they are always "in use"
I tried all the tips and tricks I know... but no way to remove it...
I'm now afraid of other VERY BAD surprises that use space on the phone....
please all listen carefully:
1) I did the full backup (phone+MSD) before the upgrade.
2) I performed the upgrade
3) I restore the backup
4) I made a new full backup again (phone+MSD) to save the new stuff
when I look at the differences between the backup 1 and the backup 4, the backup 4 is bigger of almost 10Mb!!!!!!!!!!!!
WHAT THEY DID TO MY PHONE??????
help help help"
Also wenn das war ist, bestätigt sich ja eben die tolle "MagicGate" Politik bei den neuen MsDuo's. Das ist aber auf eine andere Art und Weise auch gut:
so ist es wahrscheinlicher das irgendwann ein hotfix für MsDuo-Pro's erscheint (das Gerücht um den jetzigen fix konnte ja noch niemand bestätigen ?!?).
Naja, das DRM sich irgendwann mal durchsetzt war ja klar... 
mfg,
limp