Is this a site available for public viewing? If so, could you provide a link, and list the steps to reproduce the problem?

If it's not public, check Firefox's browser console (formerly known as the error console), which you can call up using Ctrl+Shift+j. Unless there is a problem with a CSS rule, you can "unclick" the CSS button on the bar above the list of issues to reduce the level of clutter.

Sorry but this is an internal system. The problem is baffling because there seems to be no consistency in its patterns. Sometimes when we pull up an account, it would show the info. Other times the same information does not come up. We thought it could be missing records, i.e. orphaned rows, but this isn't the case. It is quite odd and especially hard to bug because we can't consistently replicate it.