Monrovia, Casablanca Time Zone

Hi All,

I am currently using iCal with iSync to my other macs. I also sync Entourage and iCal which in turn sends my iCal information to Entourage and then from Entourage to my Employer's exchange account. Every so often the time zone changes on my events from Pacific to Monrovia, Casablanca. The result is that all day appointments in Entourage and in Exchange appear to start at 5pm the day before they actually occur. I have seen that some other people have had this issue but have never seen a solution or for that matter a response to the issue. Does anyone know how to help with this? Thanks in advance. J.