I have tested this in Firefox 3.0.10 and it appears to be a problem with Firebug when you have the Net panel enabled. I turned off the Net panel and the problem disappears. I also tested this in safe mode and it does not keep the file open.
I have tested this in Firefox 3.0.10 and it appears to be a problem with Firebug when you have the Net panel enabled. I turned off the Net panel and the problem disappears. I also tested this in safe mode and it does not keep the file open.