i guess this really isn't a bug, but i noticed that the clear button can take a long time after a large amount of data has been collected.
looks like the entry widget doesnt like deleting large amounts of text.
if you destroy and recreate the output window it performs a lot faster.
I'm not too familiar with TK. maybe there is a better way. but for now I'll include the file with the changes.
love the program.
sockspy with faster clear button.