Just hooked my new 2011 Mini Server up to my APC Back-UPS ES 750 and the APC unit won't stop clicking. It sounds like it is continually switching the battery backup off and on. It does this 2-3 times a minute. The unit was previously used on my PC for about a year with no troubles. It just started this since plugging the Mini into it. Nothing new has been added to the UPS other than the Mini. Any ideas? Thanks!