I'm using TortoiseSVN on my development machine (running Windows Server 2003) and VisualSVN Server on the server side. Both are the latest versions (against Subversion 1.6.5).
Everything works well generally; however I'm getting a little frustrated with the TortoiseSVN file overlays (the little icons that show locked or modified statuses on the files in Explorer). Sometimes these overlays seem to update instantly after a commit or lock, sometimes they only change after a couple of refreshes, and sometimes they show completely the wrong status until the next reboot.
It might be an impossible question to answer, given the amount of variables (other installed software, for example), but are there any known tricks to speed up the updating of these overlays?