Hello, We have asp.net application: .net / 200 000 loc and about 200 000 loc in orbital projects (referenced to website as projects (not as dlls)). Compiling application time is "normal". Full recompile lasts about 40 minutes but when we make changes in particular projects or website it's not so painfull. One thing is specially painfull: 1. I fire up website (application run in browser) 2. I do any change in app_code 3. Any postback 4. When I look into build window I see all symbols are loaded. Symbols are loaded one per dynamic dll. Dynamic dlls is one for folder in website. Our Website has about 100 (sub)folders. Loading symbols for one dll lasts about 3 seconds. It's easy to calculate: 100 x 3 = 300 seconds = 5 minutes - that's time we have to wait after any change in AppCode. I have one additional question: I thought that if we convert website to web application situation will go better. I have done it. When i compile application one dll rises. But when the application is running I observe the same situation: symbols are loaded one per directory so it doesn't have any relation with one dll for web application project. Probably I mix concepts... Have you similiar problems? or Can someone clear how symbols work? (I try to adjust symbol server but it seems to ignore it) Thaks for help and excuse my english;) Maciek