I think we were bit too early to upgrade our SharePoint and Project Server farm to 2013 version! The one thing I do not understand with SharePoint 2013 (had the same concern with 2007 & 2010) is that what does Microsoft expect its customers who has invested in hardware, software, people, time and money to do with all the known issues in these products. Here are a few examples: Blob Cache Issue Project Server 2013 - Missing Resource Issue SharePoint 2013 - Distributed Cache Bug SharePoint 2013 - Usage and Web Analytic issue There are many other examples and we learn that these are bugs when somebody finds a workaround or a fix and mention it in their blog. But then these are not from MS officially but then those fixes work most of the time. I wish MS invested more in testing and made sure such a major release of a product like SharePoint 2013 didn't have so many issues. Looking forward to SP1 now but the best bet would be not to upgrade to SharePoint 2...
My experiences with SharePoint and other technologies