Just installed Chameleon SSD Optimiser to fix the trim issue after the 10.9.4 update. As this update breaks the trim setup. This also has a sleep function that I will play with to see if any of the three options will provide a closer approximation of true sleep on the Microserver.
Still no joy with the iMessage & iCloud fix. I have tried a number of fixes that have been posted on various sites, none of them have made any difference. On the plus side I haven't broken iTunes and the AppStore.