Once you click "Save" you are no longer working with Reader, but rather Windows Explorer, whic handles ALL saving of files from any application.
Have you cleared your browser cache recently?
Have run a Disk Cleanup recently?
Have you run a defrag recently?
Have you run a system file check (Start>Run> "sfc /verifyonly")?
I use (FREE) Piriform CCleaner after every browsing session and sometimes mid-session if I visit sites I suspect plant spy cookies. CCleaner does a far more through job than Windows Disk Clean-up Utility. I defrag every Saturday. I have never run the SFC but just did so as you suggest and as soon as I click 'OK' after entering 'sfc/verifyonly', there is bright flash in the upper left quadrant of the monitor screen but I see nothing else suggesting the result of the action taken.
I was basically curious if others were experiencing this issue. I have resolved it by uninstalling Reader X and downloading and installing Reader 8. Henceforth, I will ignore ALL pop-ups advising so-called 'upgrades' are available.
Thanks you for your reply.
BTW, CCleaner has a cookie-keeper function to save username/password login info for future visits. What specific tasks it carries out is user-selectable from extensive menus. It also has registry cleaner and drive-wipe features, the latter with different overwrite options and 'whole drive' and 'free space only' choice.