I found where you can get the Blocking Third Party Cookies window to show up again in Spybot,when you open Welcome Center,click System scan,then it's over to the left,Disable third party cookies.
I tried to get the same results as you,Forcen,but no luck.I have Firefox 17.0,also.
I normally have Firefox set to accept third party cookies,so I tried blocking 3rd party cookies,restarting firefox a couple times,then restarting my computer twice,and my settings didn't change.
Then,I set Firefox back to accepting third party cookies and did a couple opening and closings of Firefox,and rebooted my computer twice to see if my cookie settings would revert back to not accepting third party cookies,and there was no change there,either.(other than my computer might be feeling a little dizzy.) :laugh:
Maybe the third party cookie setting changing in Firefox is random,and it'll change for me later on.If so,I'll post here.
If you'd like to stop sdtray from showing up on startup,you could disable it in msconfig.
If you're on Vista or Windows 7,click start,type in msconfig,then rightclick msconfig and run as administrator.
If you're on Windows XP,click Start,run,type in msconfig,then click okay.
Click the Startup tab,scroll down to where it says Spybot - Search&Destroy,uncheck it,click apply,and then OK.
For sdhelper,I don't believe that it is installed by default.Open Spybot Welcome Center,checkmark Advanced User Mode,select Settings.Click the System Integration tab.If it says Install beside Internet Explorer integration,then you won't need to do anything further.