I seem to have picked up a bug in the new OS 5.0.0.328 and wonder if there is a fix. Synchronizing via BES with outlook mail and contacts works bidirectionally just fine. However, the calendar synchronizes only one way, i.e. from the computer. If I enter events on my calendar from my computer they are synched just fine with the BB 9530. However, additions or deletions to the calendar from the 9530 do not synchronize? Any suggestions