I have a project where I am adding a web reference, which adds successfully, but both the name space and the class names are marked with the "Cannot resolve symbol" error and ReSharper's IntelliSense doesn't work. If I turn off the ReSharper IntelliSense and use Visual Studio's works just fine.
My machien specifics:
Windows Server 2008 R2 Enterprise (6.1.7600)
Microsoft Visual Studio 2008 Version 9.0.30729.1 SP
Microsoft .NET Framework Version 3.5 SP1