Unpleasant experience with VB.Net 2005 Beta

Been using VB.NET 2005 Beta for 1 week plus, at first was amazed with the speed and intelligent of VB.Net 2005 that can bring, however after some time, some problems rose. At first it can't open the design view of projects created in version 2002 and converted to version 2005 once. Then I have to redesign the interface of every form then it works again. Now after a system crash, it can't even...