I have replicated(transactional replication) databases in sql server2000. it had some scheduled time for doing replication. but after few days i saw that the subscription task had disappeared without any cause. so again I subscribed the publication but after one day same problem occurred!! again deleted..I dont know why..please give me a solution for this.
I met the similar situation recently. It looks like the connection problem between publisher and subscriber led to it. When the connection recovered, the subscription came back.