For me as a programmer, the rally against Mono makes no sense. Also have you considered that maybe the other versions of ERP software that were available were either worse or much more expensive? There is nothing in .NET that limits use to IE if that's done then you have the vendor to blame not the technology. I work with an set of (very expensive) Oracle products every day that utilize JSP (Java Server Pages) and until a few months ago the only browser supported was IE 7.

It's not just operating systems, if the application does reporting or comparisons involving date ranges it most likely will need to implement the Tz database which is available in many languages (ex. Ruby, .NET.)

Hey at the end of the day is was a application built by Accenture... my guess is it wasn't the operating system or .net framework that was hacked or there would have been a lot more compromised sites.

A hard keyboard + ConnectBot make my Samsung Epic a good fit...

6th paragraph:
“We've had discussions for years with both companies in an attempt to resolve this issue amicably, and we have not been able to reach a satisfactory agreement,”
People should really read the article...

I am pretty sure HTML5 is still a draft and given Safari's market share I wouldn't expect many developers to design specifically for Safari.

For me its design to suit IE and Firefox. Generally Firefox and WebKit render about the same so no worries.