Hibernate version: 1.2.0 (it seems also in 1.2.1)
Mapping documents:



log:
2008-03-26 20:22:37,399 [5] INFO NHibernate.Loader.Loader - SELECT
site_id AS SiteID,
name AS SiteName
FROM dbo.tbl_site
2008-03-26 20:22:37,399 [5] DEBUG NHibernate.SQL - SELECT
site_id AS SiteID,
name AS SiteName
FROM dbo.tbl_site
2008-03-26 20:22:37,696 [5] INFO Memcached.ClientLibrary.MemcachedClient - Serializing for key: $$Key$$ for class: $$Class$$
2008-03-26 20:22:37,790 [5] INFO Memcached.ClientLibrary.MemcachedClient - memcached cmd (result code): set NHibernate.Cache.StandardQueryCache@sql:-SELECT-
------------site_id-AS-SiteID,-
------------name-AS-SiteName-
--------FROM-dbo.tbl_site;-parameters:-[];-named-parameters:-{};-first-row:-0 8 3599 4096
(ERROR)
2008-03-26 20:22:37,790 [5] ERROR Memcached.ClientLibrary.MemcachedClient - Error storing data in cache for key: NHibernate.Cache.StandardQueryCache@sql:-SELECT-
------------site_id-AS-SiteID,-
------------name-AS-SiteName-
--------FROM-dbo.tbl_site;-parameters:-[];-named-parameters:-{};-first-row:-0 -- length: 4096. Server response: ERROR
2008-03-26 20:22:37,806 [5] WARN NHibernate.Caches.MemCache.MemCacheClient - could not save: sql: SELECT
site_id AS SiteID,
name AS SiteName
FROM dbo.tbl_site; parameters: []; named parameters: {}; first row: 0 => System.Collections.ArrayList

log from memcached server:
<1828 get NHibernate.Cache.StandardQueryCache@sql:-SELECT-
>1828 END
<1828 ------------site_id-AS-SiteID,-
>1828 ERROR
<1828 ------------name-AS-SiteName-
>1828 ERROR
<1828 --------FROM-dbo.tbl_site;-parameters:-[];-named-parameters:-{};-first-row
:-0
>1828 ERROR
<1816 new client connection
<1804 new client connection
<1792 new client connection
<1792 set NHibernate.Cache.StandardQueryCache@sql:-SELECT-
>1792 ERROR
<1792 ------------site_id-AS-SiteID,-
>1792 ERROR
<1792 ------------name-AS-SiteName-
>1792 ERROR
<1792 --------FROM-dbo.tbl_site;-parameters:-[];-named-parameters:-{};-first-row
:-0 8 3599 4096
>1792 ERROR
<1792
>1792 ERROR
<1792
>1792 ERROR
<1792 ♂
>1792 ERROR
<1792
>1792 ERROR
<1792 ♦♦
>1792 ERROR
<1792 ♠
>1792 ERROR
<1792
>1792 ERROR
<1792 LoadFactorVersioComparer►HashCodeProvideHashSize♦Keys♠Values
>1792 ERROR
<1792
>1792 ERROR
<1792 ♂
>1792 ERROR
<1792 ♠
>1792 ERROR
<1792 ♠A
>1792 ERROR
<1792 ♠`
>1792 ERROR
<1792 MemberType►GenericArguments☺☺☺☺
>1792 ERROR
<1792 ►↕
>1792 ERROR
<1792 get 5lFcH4KU6kS9dCt6hX3RIv0MJN0=
>1792 END

also heard BEEP sound form server! :)

stack:
InnerException: of type <<NHibernate.ADOException>> message:
- Key cannot be null.
Parameter name: key
InnerException: of type <<NHibernate.ADOException>> trace:
- at System.Collections.Hashtable.get_Item(Object key)
at NHibernate.Impl.SessionFactoryObjectFactory.GetNamedInstance(String name)
at NHibernate.Impl.SessionFactoryImpl.GetRealObject(StreamingContext context)
at System.Runtime.Serialization.ObjectManager.ResolveObjectReference(ObjectHolder holder)
at System.Runtime.Serialization.ObjectManager.DoFixups()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at Memcached.ClientLibrary.MemcachedClient.LoadItems(SockIO sock, Hashtable hm, Boolean asString)
at Memcached.ClientLibrary.MemcachedClient.Get(String key, Object hashCode, Boolean asString)
at Memcached.ClientLibrary.MemcachedClient.Get(String key)
at NHibernate.Caches.MemCache.MemCacheClient.Get(Object key)
at NHibernate.Cache.StandardQueryCache.Get(QueryKey key, ICacheAssembler[] returnTypes, ISet spaces, ISessionImplementor session)
at NHibernate.Loader.Loader.GetResultFromQueryCache(ISessionImplementor session, QueryParameters queryParameters, ISet querySpaces, IType[] resultTypes, IQueryCache queryCache, QueryKey key)
at NHibernate.Loader.Loader.ListUsingQueryCache(ISessionImplementor session, QueryParameters queryParameters, ISet querySpaces, IType[] resultTypes)
at NHibernate.Loader.Loader.List(ISessionImplementor session, QueryParameters queryParameters, ISet querySpaces, IType[] resultTypes)
at NHibernate.Impl.SessionImpl.Find(CriteriaImpl criteria, IList results)

of course i execute query with SetCacheable(true)