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070504. Not sure what I did, but I think I clicked on Refresh while the progress bar was running to get contents of AU centers. Note that I am having network problems. That is no excuse for the display to freeze of course. It has been dead for several minutes so I will have to kill the IDE.
Created attachment 42306 [details] Thread dump
It did actually recover several minutes later and tell me that it could not connect to the UC.
The part of problem is already fixed in M10. Networks operations are not called from EQ. Anyway the root of problem is java.net.URL.openStream() takes sometimes a huge time if network is presently gone. If OS works offline then java.net.URL.openStream() throws IOE immediately but if OS boots online and then have loosed network connection java.net.URL.openStream() waits a couple of minutes till throws IOE. The caller cannot know whether network is working (e.g. and downloading data) or network is broken.
Happened again in 070522, will attach new thread dump. My network connection is fine AFAIK.
Created attachment 42663 [details] Thread dump
Still reproducible in M10 => increase the priority.
Plugin Manager UI is now blocked while initialization is running.