"This study is being solved currently" is hanging up my session of Solidworks after over 12 hours, even though the log file shows the Random Vibration study solution took 6 hours. This OS is XP64, with Solidworks 2011 x64, SP5.0. When I look at what is happening with the file structure, the CWR file is actively being increased by 10MB every 5 sec or so, what does this indicate is going on? My guess is that it is saving plot data for every single solution step, whiich is preventable.