Just a guess here but sounds to me as though you have spyware problem. Have you run Adware or Spybot?? If not I suggest downloading one or both of them and running them. This will help with the startup issues.:)
My PC is just over 3 months old. When I start it up, everything loads ok except for the start toolbar. Only Symantec Antivirus and my Networking icons show up when the sound tools and Symantec Firewall are set to start also, and they appear to be running in the Task Manager but their icons don't show. The start bar also is "unusable" and "locked" for the first 3-5 minutes after startup.
Can someone please help. I am running an Intel based system with Windows XP Pro SP2. The PC has been running hot lately...?