General :: Access 2010 - Database Not Responding When Fields Selected

For some reason our database keeps "not responding" ...

The application stops responding when:A field is selected that has a input mask

A combo box is highlighted (forcing the drop-down menu to open)

Certain buttons are pressed (in fact all but two trigger not responding, why the two buttons are immune)

if I put a break point on a section of code that runs when I press a button (any button, it doesnt matter) and I then press the button which takes me to VBA, to the break point. Then I press F5 to continue to run the code until the function ends (essentially doing nothing, just running the code to the soonest break point I can in the function and then running the rest of the code as normal...) it all works fine again!!!!

I fixed the issue by creating the function:

Code:
Sub aiuewjgaop()
End Sub

saved the database, deleted the function and then saved the database again.