MathWorks has informed us that they have found and resolved a number of problems in MATLAB R2014b that could lead to files being removed.
Information about the bugs and patch is available in bug report #1184018 on MathWorks’ website. In short, the most serious one is removal of files in the current directory when MATLAB exits. The others are crashes when using Simulink. The fixes are ZIP files that must be extracted in the MATLAB R2041b install directory, by a privileged user.
The main distribution from MathWorks has been patched, and installs from the ditto distribution site after the morning of January 16 will have these patches in place.
If you have any questions about these MATLAB patches, please contact Research Computing for answers. Remember to backup your files (such as the .m files) to prevent loss of data or work.