I have custom wss 3.0 webpart installed in my wss site. This webpart is deployed to many servers. Performance is very positive and stable all across other servers. Recently i have encountered a weird problem in one server. After couple of days of operation Web part just disappears from webpart zone. I have tried deactivating and reactivating back, redeployed the webpart but it hasnt helped. Has anyone encountered with this situation ever. Seeking for your suggestions. Thank You
Disallow closing the web part by clearing the "Allow close" checkbox in web part properties. Details here.