A Christmas present from ITA: Response to complaint re: Boombox/QPX/ and other issues.
For what it is worth, here is what I rc'd today after griping to ITA Matrix support:
"I'm sorry that the site has been having capacity problems again over the last few days. However, there have been no capacity issues over the last roughly 24 hours and we are trying to keep it that way.
If you run into other errors, especially with calendar searches misbehaving, try refreshing the page. We will update the site to fix these errors over the coming weeks."
Google Groups "Matrix and OnTheFly Help Forum"