I monitor pages for changes, and am having problems with the generated URL. When someone updates a page, I get the email, with a link to changes like:

Changes: http://xxx.xxx.xxx/pages/diffpagesbyversion.action?pageId=313&originalVersion=90&revisedVersion=91

The problem is the change that was made was from 89 to 90, not 90 to 91. Clicking this link will give me an error that it couldn't find the specified page version. I've tried reindexing, to no avail.