Currently Being ModeratedMar 20, 2013 4:21 AM (in response to martinb3949)
If you find those files it means you have something on your computer related to Office 365 that creates them.
Solution. Discover the responsible or just get accustomed to empty the trash at every startup.
Currently Being ModeratedMar 20, 2013 9:15 AM (in response to Alberto Ravasio)
Thanks for the tip Alberto. However I could not find a specific reference to Office 365 so unistalled Office Mac 2011 and re-installed it and that appears to have solved the problem.