" I have a fairly big XML database here and was wondering if I might get better performance by loading it into MySql." If I unterstood well, you want to "load" the xml file into MySQL witch means reading it and then loading it into the DB. If this is the case then it makes no sense. Just load it and LINQ it. If you want to give up the XML and use the DB taht's a totally different thing and it will be faster(a lot faster) especially for large amounts of data.

Read and Write are 2 separate permissions in Windows where as Delete is probably considered Modify and your admin might not have granted you (IUSER_MachineName) access to that function. Look into that for starters. - Sage

I got around this only by creating a new project and "Add Existing Items" to it, essentially reconstructing the whole project. That worked, and now the properties stick just fine. No idea what went wrong with the original project...I was gettin' worried about it!