VS 2005 - why cant i debug when using a querystring param?

hello,
i am attempting to attach a debugger to the "aspnet_wp,.exe" process.
this is how i normally debug my ASP.NET apps, and i dont have a
problem debugging at any other time.
however, when i am hitting a page in IE that has a querystring
parameter attached to it, such as:
http://localhost/reports/somePage?rid=9
...then my Visual Studio 2005 instance appears to *not* pick it up. no
breakpoints are hit.
but, if i remove the "?rid=9" from the URL, then bam -- VS.2005 picks
it up and my breakpoints are hit.
anybody know whats up w/ this? i have the SP installed.
thanks,
smok nevermind -- im not able to reproduce this.
i have noticed that VS 2005 seems a little wonkier than VS 2003 when
it comes to attaching the debugger to the aspnet_wp.exe process, tho.
it was necessary for me to stop, rebuild the entire solution instead
of my project, then re-attach. breakpoints are being hit now.
sm