Thus far, only one instance of increased memory use has been seen. This occurred during a Zpectrometer run with Andy Harris. The process was killed by the out of memory killer, and when restarted almost immediately gobbled up a huge amount of resident RAM.
On Feb 25 around 11:25 use jumped from 5% to 10% RSS appears to follow memory usage. (Amanda, KFPA/VEGAS configuration)
Since the current log, memory use has actually been dropping from about 10.6% on Feb 26 09:52:01 to 4.6% on Tue Mar 4 10:44:01.