Am i well protected from PC ad ware, spy ware,virus?

Hi there, im wondering if my pc is well prottected or not, at this moment ive got avast antivirus,ad aware2007,spybot search and destroy,Comodo bo clean, comodo firewall, cc cleaner, tuneup utillities 2007, free ram XP pro, now the thing is that mine is a verry old pc and with all these software running at one time or another or allways on the back ground things can really slow down allot ! specially every night after 6pm for some reason , my question is could there be some sort of ad ware, virus, spy ware that I'm missing ? if so what software can i get reed of and what do i replace it with? and or what else can i add that is compatible with all this? ( don't know much about computers here , all i know i learned from this site , thank you to all that will respond to this !

Am i well protected from PC ad ware, spy ware,virus?photoshop

You have way to much on your system that's eating away your resources on your system. Dump some of these, and just use one antivirus, spyware cleaner, registry cleaner and a fire wall should all that you need to be good.

Am i well protected from PC ad ware, spy ware,virus?symatec

I think you have overkill. I would stick with just the spybot search and destroy , a antivirus program of your choice, and the firewall. If these cannot catch the virus, then you are already in trouble anyway.
How old is your PC?? What are the specs on it??