On 12 May 2011, at 14:52, Robin Guest wrote:

Wondering why I've never experienced this - running Win7 64-bit with both 32 and 64 bit versions of TSVN installed,
When I bring up an open file dialog in IE (such as gmail attach file) I see the overlays and don't get the OP's security warning.

FWIW I used to use TortoiseCVS (admittedly a long time ago and with Windows XP) but I never encountered this problem.  However if UAC is newer than XP, that would explain it.

Can anyone suggest a simple way of reproducing this problem (i,e, without me needing to sell something on Ebay!)?  If I can reproduce it some other way I'll try Simon's suggestion and see if it helps.