Index: trunk/grails-app/controllers/TaskDetailedController.groovy
===================================================================
--- trunk/grails-app/controllers/TaskDetailedController.groovy	(revision 552)
+++ trunk/grails-app/controllers/TaskDetailedController.groovy	(revision 553)
@@ -809,9 +809,9 @@
         result.today.year = dateUtilService.getYearFromDate(result.today.date)
         result.nextMonth = [:]
-        result.nextMonth.date = dateUtilService.getNextMonth(showDate)
+        result.nextMonth.date = dateUtilService.plusMonth(showDate)
         result.nextMonth.month = dateUtilService.getMonthFromDate(result.nextMonth.date)
         result.nextMonth.year = dateUtilService.getYearFromDate(result.nextMonth.date)
         result.previousMonth =  [:]
-        result.previousMonth.date = dateUtilService.getPreviousMonth(showDate)
+        result.previousMonth.date = dateUtilService.plusMonth(showDate, -1)
         result.previousMonth.month = dateUtilService.getMonthFromDate(result.previousMonth.date)
         result.previousMonth.year = dateUtilService.getYearFromDate(result.previousMonth.date)