hi,
i just wanted to share what i just found out...
as you all know, after you change something on the partition the OF makes an database update.
so the next time you charge your e200 with the OF it will do an update and then it switches to the menu... without mounting (even in MTC mode).
what i just found out is that in this situation it won't register itself as an usb device and so will charge really slow.. even though the battery indicator tells something different. (at least with linux - lsusb gives info about connected usb devices)
so, don't forget to unplug and replug the cable after database update is finished.