I've been having several issues with SW2011. I'm on service pack 1.0.
One problem that has been particularly annoying is that subassemblies and parts within assemblies do not stay suppressed. I suppress items within the design tree but they do not stay suppressed, sometimes I can suppress them if there is a top level assembly and do it there. Even if I do get them to suppress, then the next time I open the assembly.... there it is again!
The assemblies typically have multiple configurations with different items suppressed in each configuration.
Is this just a bug or am I possibly doing something wrong? Has anyone else had this problem?