Hi Im having an issue on my Windows 2003 Xenapp 5 Farm where Sessions keep locking up and just disconnecting, event logs say Event ID 50, and 26 for delayed write failed. This is particularly noticable with Lotus Notes 8.5 client which relies heavily on File Server. I've been doing research on this all last week with no luck at all. File server hosting user home drives/profiles is on the NAS. NAS is underutilised and Citrix Servers are all connected to Gig network again which is underutilised. No other applications get errors except for Lotus Notes, and when it crashes all of their applications crash. It just crashes the user's entire connection. There is no latency that I can see Has anyone seen this issue before? Ive had to reset over 300 connections in 1 month because of this issue. We have Session reliability enabled. Thanks Ang