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The following steps lead to a deadlock. I did not succeed when I tried to reproduce it. 1. create a web project 2. switch to Files tab 3. open <project-root>/nbproject in the Explorer 4. open ant-deploy.xml in the editor 5. switch the projects target server to another server deadlock occurred.
Libore, do you have a thread dump?
Created attachment 29969 [details] thread dump
this seems to me more like a web project issue -> reassigning for evaluation
Unreproducible. Feel free to reopen if it happens again but it seems that it happened only once under some unknown unspecified circumstances.