Browser treats some wiki links as files to be saved

If I click on (say) the edit tab for an entry, I get a dialog asking if I wanted to save or open index.php. (It is the normal dialog for a file download.)

Happens in IE 6, SP2 and Firefox 1.0.7. (Can't update either on the PC I am using; it is at an office I am squatting in.)

Haven't tried from home but will try and remember to do so sometime.

Does not happen if I use the little [edit] link. Does happen if I double click the section title.

Regards

Jim

I've been noticing that on 'fox 2.0 too - but I think not just on this wiki but also on wikipedia.
I'll troubleshoot....

Just tried on IE7 (7.0.5730.11). Same result.

Regards

Jim