This Web Part requires at least Microsoft Internet Explorer 7.0

After installing internet explorer 10, PWA broke with this error message

This Web Part requires at least Microsoft Internet Explorer 7.0. For more information, contact your Project Server Administrator.

Adding the website to the compatibility view list solves the problem. Tools -> Compatibility view settings

 

SharePoint Project Sites appear in the navigation menu

After I edited the navigation menu in Microsoft Project Server 2010, I found new links to all the project sites.

To solve the problem I had to delete them manually from the Quick Launch page.
Since the SharePoint Publishing feature is enabled, Quick Launch link will be replaced by Navigation, access it from the url /_layouts/quiklnch.aspx

Excel Services Application event 2026

When trying to run any BI sample report in Project Server 2010, the report gets stuck on loading the following event is logged

Log Name:      Application
Source:        Microsoft-SharePoint Products-Excel Services Application
Date:          9/18/2012 12:01:23 PM
Event ID:      2026
Task Category: Excel Calculation Services
Level:         Warning
Keywords:     
User:         
Computer:     
Description:
An internal error occurred.
   at Microsoft.Office.Excel.Server.MossHost.MossHost.Microsoft.Office.Excel.Server.Host.IEwaHost.IsSecureConnection()
   at Microsoft.Office.Excel.WebUI.EwaCUIDataSource.EnsureDocument()
   at Microsoft.Web.CommandUI.CUIDataSource.RunQuery(UIQuery query)
   at Microsoft.Office.Excel.WebUI.EwaRibbon.QueryRibbonDataSource(CultureInfo uiCulture, String clientID, Boolean denormalizeImareUri)
   at Microsoft.Office.Excel.WebUI.EwaStringsHandler.ProcessRequest(HttpContext context)
This error occured because there was no site collection created at the root of the web application, creating a blank site collection fixed the problem.

Also a hotfix is available http://support.microsoft.com/kb/2596582