Are you using a laptop with a touchpad? If so, touchpads are well known for unusual behaviour because we brush against it when typing. Also some systems have touchpads that interpret 'gestures' as key strokes.
I have a laptop with a touchpad which I don't use much but when I do I am forever brushing against it and end up deleting whole words or lines, or other unwanted things. I can turn off the touchpad when typing with a single button push, and that helps, but I now have it turned off permanently in favor of a USB mouse.
If it is not that, is Word set to auto-save at all?
What about the keyboard? When was the last time you turned it upside down and, (gently), shook it. If never you might be surprised what comes out.
Mark
I have no idea how this happened, whether I hit some strange control character or if this is a program corruption. I opened and was working on a document in Word 2000 (9.0.2720)on Windows XP, like I do every day for years. All of the sudden, to make a long story short, every 1-4 characters I type opens a "Save As" window. I can find no pattern. It happens with most if not all letters. It happens with "enter". Sometimes "saving as" opens another "Save As" window. Sometimes I have to ctl-alt-del to get out of it. Troubleshooting: I went to C>Documents and Settings>Owner>Application Data>Microsoft>Templates and deleted "Normal". (I tried this three times, but each new template had the same bug.) What next? Thank you.

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