i have updated my ide to 1.6.4 and i run into a serious problem.
Very often the ide crashes with 'JavaThread "cc.arduino.packages.discoverers.network.NetworkChecker"'.
This happens when i am idle or during work. Sometimes this happens right after the start of the ide.
Sometimes this happens 5 times within 30 minutes (see my attachments).
I use Windows XP64 (the same as W2k3 Server SP2) as OS.
Please have a look into the crashreports, hope this will help to find the problem.
arduino-1.6.4.zip (36.8 KB)