I have exactly the same problem when trying to add a bookmark in MicroB, the notification is a lie, because there is PLENTY of memory, and I am unable to solve the problem. Note: I even manually made an entry in Mybookmarks.xml, and it does NOT show up in MicroB, of which, by the way, I setted the memory-management to automatic. And in the Operabrowser there is NO problem at all with making bookmarks ... So, WTF is this lunatic again MicroB-problem then? Anybody understands this?