SharePoint 2010 - How to configure multiple search core results web parts on a page?

What?

How to configure multiple search core results web parts on a SharePoint 2010 page?

Why?

So what's a big deal in dropping multiple search core results web parts on one page?

When multiple search core results web parts exist on a page each with own query specified in either "Append Text To Query" or "Fixed Keyword Query", then one of the search core results web parts returns wrong results.

SharePoint 2010 pages throw JavaScript error "SP.Ribbon.PageState is null" when we try to connect 2 web parts on a publishing page

What?

SharePoint 2010 pages throw JavaScript error "SP.Ribbon.PageState is null" when we try to connect 2 web parts on a publishing page

Why?

Don't know :) but I know a fix

SharePoint 2010 - Unable to attach debugger to custom workflow built using Visual Studio

What?

I have been developing a custom workflow for SharePoint 2010 using Visual Studio 2010. I have attached it to a library and started to debug it. The debugger got attached right the first time. But after making some code changes and redeploying the workflow, I was unable to attach debugger to my custom workflow anymore!