actually wroot did point my to this direction with his “flood protection” thread.
Spark uses some memory to display images and runs afaik with Xmx64m. I sent some emotions from one client to another and could see how the used memory did increase.
Closing the chat window does not release the memory.
Opening it once again allocates some more memory.
Closing … Opening … Closing … Opening … nearly 100 % CPU usage and if one does this more often (having the time to wait for all the GC’'s to complete) -> OutOfMemory