my system is an AMD Athlon 64 3000+ on an MSI RS480M2 motherboard with 512 Mb RAM with 120GB SATA and 40GB PATA hard drives running Windows XP SP2 with latest patches. My problem is that I cannot fast user switch using the option from the logoff menu. "services.msc" shows that the service is disabled and it depends on Remote Procedure Call (RPC). I cannot start the service even though I have started the RPC service. Please help as to how to enable fast user switching in XP. Also, an additional line is appearing over the taskbar when I apply any theme including Windows XP theme but doesnt occur over the windows classic taskbar. This happened after I installed Norton Systemworks 2006. I removed the software and reverted back to Systemworks 2005 but the line persists. This is from the Administrator account. The taskbar in the normal user account does not show this line. Any idea on how to remove this? Thank You.