I'm using two plugins that utilize google maps - Events Manager and Geolocation. Below is a link to a page where maps from both plugins are displayed.
SOMETIMES the maps are both displayed properly, and sometimes they're not. Sometimes the map in the content area (pulling from Events Manager) will show as a grey box "loading" indefinitely. Sometimes it will show, centered in the correct area, but without its marker. At the same time, sometimes the map in the sidebar will show properly - while other times it will show with the map itself pushed 15 pixels or so to the right and down from its container, with or without its place marker, but again centered properly.