is this file corrupted?

I have one sheet that behaves badly when I activate it.
When I have EnableEvents turned off and switch to this sheet my cursor will only move to unlocked cells even though it is not protected. I can use my mouse to point to any cell, just the "End" and "Arrow" keys don't work properly.
I protect it and unprotect it and then everything works fine.

I can't duplicate the problem and it's not my file.

Try exporting the sheet(s) to a new workbook

That's what I'll do when I conclude that it's corrupted. I was really hoping that there was something specific causing it, and that it could be fixed.

foxguy, please stop quoting whole posts.

Teylyn;
OK. I sometimes have trouble figuring out who someone is responding to because they didn't quote the person, so I figured I would start quoting the person I'm responding to. I guess it wasn't such a great idea.

As a general rule: if you respond directly to the last post in the thread, there's no need to quote. If you respond to an earlier than the last post, then a quote can be useful, but keep the quoted text to a minimum.

Without biewing the workbook we can't really say, have you tried enabling events when the routine is finished?

RoyUK;
There is no routine ending. I'm updating the workbook and turn off Events while I'm working. I just manually change tabs and my cursor doesn't work right until I protect and unprotect the sheet.

Jack;
I have just noticed that one of my range names keep getting it's RefersTo changed. But that went away by just closing and reopening the file. I guess that's another indication that the workbook is corrupted.
There are 12 tabs. The file size is 4,500 KB. Can't think of what else my be useful.