Came across one issue where someone was getting error with # 800a802b. The issue was caused due to circular references in .NET and interop components (?) I haven't get time to dig in to actual issue since it has been resolved.
My Books......
Pro .NET 1.1 Network Programming, Second edition
Pro .NET Directory Services Programming
WebSphere and .NET Coexistence
Integrating DB2 Universal Database for iSeries with Microsoft ADO .NET
DB2 UDB V8.2 on the Windows Environment