It may not even be a problem in your code. It could be an inherent issue with the SDK (Software Development Kit for the neophytes). I'm sure you already have, but it might useful to checkout the "known issues" bugs on their website to see if anything similar (i.e. out of range / corruption) is happening with a function you're using around relocation.
It would also be nice to know what time of day, and which server it's happening on. It maybe related to activity on a server (i.e. a lot of users). If memory usage is peaking on server-1 (for example) at certain times, it might useful to see if it corresponds to any of these incidents.
I'm done stating the obvious.
Good luck.