On Tue, 2011-03-29 at 00:44 +0300, Sergey Lobko-Lobanovsky wrote: > Looks like someone will have to look into > System.Web.Caching.CacheItemPriorityQueue What version of Mono are you using? I believe Marek fixed this before 2.10.1 went out. If not, it should be fixed in the upcoming 2.10.2. -Gonzalo