When I check out a file DW shows the green check mark and
shows my name in the Checked Out By column, then after 5 or 10
seconds the check mark turns red, my name disappears from the
Checked Out By column, and if I right click on the file and choose
Show Checked Out By it says the file is not checked out.
This just started happening. Check Out was working fine until
today. I haven't made any changes to the site settings or remote