Share your experience!
Who knows the solution?
Under settings>memory the phone tells me I have 280MB memory space free. But if I add all of the used memory space from all apps and so on I should have over 1000MB free.
and here it comes: even the graphic picture shows me that there is more than 1000MB free. But the phone for some reason does not set it free! Why?
Mike 
Thank you Alexdon,
understood that. But can you explain to me why in my first screen shot the blue field shows 693 MB, the gray field is much bigger but shows 261 MB?? In your screen it says another number.
Is that coulored graph totally wrong than?
Mike
I think that is just how it is displayed,not related to the actual memory.You have about 261 MB free memory.