Normally (since the new servers), a few hours isn’t needed. But it can take 5 minutes though. Or in exceptional cases even more. The time also depends on the zoom level. Not every zoom is updated as often as the others.
But your problem was probably the browser cache indeed. If you refresh your browser, be sure to clear the cache (it depends on your browser how you do this).
Discussion
Comment from z-dude on 26 May 2012 at 05:07
The renderer is a finite resource. It may take a few hours to be rendered.
Also, refresh your browser.
Comment from Sanderd17 on 26 May 2012 at 13:37
It’s updated now.
Normally (since the new servers), a few hours isn’t needed. But it can take 5 minutes though. Or in exceptional cases even more. The time also depends on the zoom level. Not every zoom is updated as often as the others.
But your problem was probably the browser cache indeed. If you refresh your browser, be sure to clear the cache (it depends on your browser how you do this).