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thank you BillGates for never doing garbage collection.It is not a windows problem, it is an IDE issue. I have to use task manager to kill the IDE when the IDE becomes non responsive (usually after my laptop has gone into sleep mode at some point). The IDE never cleans out the huge amount of temp files it makes.
It seems to be a problem that ALL windows apps have, not just the Arduino IDE. 100s of programs
seem to leave files in the Temp folder, and they never get cleaned out even after 5-6 years.
To me, Windows should have realized that those 14GB of 5-YO folders and files on my HD
were wasted space and deleted them itself. Alfter all, everybody puts them in the same Temp
directory. If it only had brain like Dorothy, that is. LOL.
OTOH, FWICT, Arduino IDE creates 3 new folders whenever it starts up, and does delete "most"
files in those folders on closing - when it closes properly. I just checked on my netbook, and I
have many dozens of build, console, and untitled folders in Temp, but most are empty or sparsely
populated with files. Mainly stdout.txt and stderr.txt, plus sketch folders.
The build directories are all empty. The untitled directories all have the "empty" sketch in them
that the IDE shows when you start it up. There are ~100 such empty sketch folders in Temp,
never deleted.
OTOH, on my other XP machine where the Arduino IDE crashes, "core.a" never gets deleted
from the build folder, and the IDE never shuts down properly when I close it.