System.InvalidCastException from System.Data.SqlClient.SqlBuffer

[Konstantinos Pantos]

Hi,
I've developed a web application and occasionally I see the following
exception in my error logs (usually when the application is stresed) but not
always not on the same code and not using any pattern. So I can't really
track down the problem.
The Exception is:
===
Type : System.InvalidCastException, mscorlib, Version=2.0.0.0,
Culture=neutral, PublicKeyToken=b77a5c561934e089
Message : Specified cast is not valid.
Source : System.Data
Help link :
Data : System.Collections.ListDictionaryInternal
TargetSite : System.DateTime get_DateTime()
Stack Trace : at System.Data.SqlClient.SqlBuffer.get_DateTime()
at System.Data.SqlClient.SqlDataReader.GetDateTime(Int32 i)
at Read_Article(ObjectMaterializer`1 )
at
System.Data.Linq.SqlClient.ObjectReaderCompiler.ObjectReader`2.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at
Metadata.CMS.BO.GroupManager.<>c__DisplayClass31.<FetchArticlesInGroup>b__2f() in C:\Work\Projects\MetaCMS\Metadata.CMS.BO\GroupManager.cs:line 384
at Metadata.Caching.Manager.CacheHelper.CacheObject[T](Func`1 addToCache,
String cacheKey, Int32 cacheDurationInSeconds) in
C:\Work\Projects\Components\Metadata.Caching\Manager\CacheHelper.cs:line 52
at Metadata.Caching.Manager.CacheHelper.CacheObject[T](Func`1 addToCache,
String cacheKey) in
C:\Work\Projects\Components\Metadata.Caching\Manager\CacheHelper.cs:line 29
at Metadata.CMS.BO.GroupManager.FetchArticlesInGroup(Int32 groupId,
Boolean fetchPresentable) in
C:\Work\Projects\MetaCMS\Metadata.CMS.BO\GroupManager.cs:line 384
===
Has anyone seen this problem before?

Thanks

--
_________________________
Kostas Pantos [MCP]
http://kostas.pantos.name