In the past 4/5 days I noticed something very strange. I am using Ubuntu 13.04 amd64. After some time from the system login I think an hour or two may be, either nautilus or python process uses too much memory about 2.5GB. Normally I kill the process and memory get released, but within another hour or max.
Two repeats the same situation, and this goes forever. Honestly as I have 8GB of memory I do not track always the usage, just when I notice from system load indicator that my computer uses a lot of memory, so I never observed if the memory usage by python or nautilus is incremental (but I think it should be).
Nothing helped to make the problem disappear: reboot, shutdown or even X restart. But what is really strange is that this memory usage is alternating, ex: at first occurrence after system start I always have both processes - 2.5Gb, python - 1.0 GB, after killing them have nautilus - 2.5 GB, after killing it I have python - 2.5GB, and the process repeats. So my question is how to find out the cause of this, how to debug such thing, or at least any suggestions.