Hi ajthorp and welcome to the eForum
I'm sorry to hear that you are having problems here.
Are you a Vodafone Australia customer? If so you would need to contact them for specific Technical support as this forum is a Vodafone UK forum.
I'm not entirely sure on what the issue is here. have you made any changes to the Computer that may have caused this issue? (Software installs? etc)
Could you make sure the Time is set correctly on your computer.
Please let me know how you get
Thanks
Wayne
eForum Team