Something can always go wrong.  It is possible that using this
software could, at some point, result in a machine lockup or, more
remotely, a server abend (although in over a year of testing I've
never seen this happen).

These problems could be caused by you or by the software.  It is
important that you always test your code on non-production servers
if possible, and to make sure that you have backups of important 
files.  This is just common sense.