vs2012 "no symbols have been loaded for this document"

I upgraded an older project from vs2010 to vs2012 this morning and debugging broke.  When attaching to the web server process this error appeared:
"no symbols have been loaded for this document".
The solution was easy, I switched the default code type from "Managed (v4.5,v4.0)" to "Managed (v3.5, v3.0, v2.0)". 
(I'm not sure why vs2012 can't look and see that my project is running as .Net v3.5 and just automagically set it.)

In Visual Studio 2010 the "Find and Replace" Panel Keeps Disappearing

I don't know why, but some days you wake up and things have just changed overnight. You may find yourself in love with a co-worker or realize you really like jelly donuts for the first time.
For me a change happened one morning when the "Find and Replace" panel in Visual Studio 2010 started disappearing after its first use. Very annoying. After a while, really, really annoying. The fix in my case was to open "Tools/Options/Environment/Find and Replace" and uncheck "Hide Find and Replace Window...". I don't know how it got set in the first place, but some mornings you wake up and things are just different - now where is my jelly donut?

"You do not have sufficient privilege to access iis web sites on your machine."

While upgrading a solution from VS2005 to VS2010 in XP I got this error:
"You do not have sufficient privilege to access iis web sites on your machine." which was puzzling since I thought I had enough privileges to access iis web sites.
The "solution" to the problem was to execute this command:

C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe -ga aa\fincher

which satisfied IIS and the upgrade worked great, well, after I went to IIS, right-clicked on the web site, selected "Properties/ASP.Net" and set the "ASP.NET version" to 4.0.