Hi, I am new to this forum, I am facing one intermitent problem. I rebuild my OS, Citrix and joined to existing farm. We have one financial application named Navision. I don't have published applications, users connect Via Citrix and open the application from desktop. Here is the config. Win2K, Citrix XP FR2, Sql 2000 datastore. Hardware - Dell Here is the problem. After server rebuild few users experience a problem their screen is flickering when they work. I am not able to find out the reason. I saw some flickering issues published in citrix KB when working on IE. Any clue for this ? -- Venkat venkat@xxxxxxxxxxxx +65 9855 1209