Pictures Resize When Changing Page Breaks

I have a user here at my company that is having a strange issue with Excel. When she moves a page break in her document, Excel freezes up, then once it finally makes the change (if it doesn't crash), some (but not all) of the images that are in the document resize to super small. For instance, she may have 50 rows. Each row contains a column with an image, then a few other columns with product information. Changing a page break may cause ten of the images to become tiny for no apparent reason. Resetting page breaks seems to cause the document to explode, with cells being thrown all over the page into different locations and columns becoming uneven.
When I make the same change on the same document on my system (both using similar specs and Office 2010), this does not happen.
Any idea what might cause this sort of behavior?
Thanks in advance!

Update: I had her set the images to never move or resize with cells, and this still happens. Is there some sort of setting or something that could possibly cause this odd behavior?