This forum is actually about the Cloud as delivery, not about using individual programs
If you start at the Forums Index http://forums.adobe.com/index.jspa
You will be able to select a forum for the specific Adobe product(s) you use
Click the "down arrow" symbol on the right (where it says ALL FORUMS) to open the drop down list and scroll
Sorry. Thanks for the info though.
[Moved to InDesign forum.]
Select the Page tool (probably third from the top). Click on the Page affected and observe the Control Panel has settings for that page. Use the Page tool and drag to move that page. Or use the X and Y settings on the Control Panel for that page and the page adjoining to reset the Y position.
The Page tool was probably inadvertantly selected and the page moved without noticing it.