I didn't, I was leaving it for you as original reporter.  I was just agreeing that it's an issue.  You could hook into to the 'forward', '404' hook and serve up a real 404 page in the meantime.

Ok Matt I will submit it to trac.

for second question it is currently displaying a correct page but not correct error code. So how to generate a 404 error code instead of 200 code?

you have to send the code with the php header() function

http://php.net/manual/en/function.header.php

Thanks Matt for your suggestions and I fixed this error code by adding below code to 404.php file.

u mean like -- pg/photos/owned/username - giving wsod ? is this a user url entry ? shud normally goto (elgg) 400, do u have sample url to yr site to observe ?

Hi Dhrup,

Here is url which is producing white page.

http://www.royalloops.com/photos/owned/noor

Now here is working url

http://www.royalloops.com/photos/owner/noor

I am using Bret's tidypics plugin for 1.8.5