I have Lotus Sametime 7.5.1 installed on my computer and it was originally working fine. But after a little while, when I click on the Sametime icon, it's doesn't even pop up for me to sign on. I dont understand what my problem might be. My colleague who has the same set up is not experiencing any sort of problem. We are both using the same version of Lotus Sametime. Does anyone know what my problem may be?