Hi everyone

I realize this probably won't make a lot of sense here. Having a problem that I've been working around but now I need to fix it for good. We're using IIS and integrated auth. The users have full access to the web directory that Drupal is installed in. This is utterly verified a hundred times. Any domain user should have Read and Execute, List folder contents, and Read permissions on the whole directory right now.

Occasionally, if the user is *not* in the full administrators group for the whole PC, the user will get blank pages. If I put someone in the local admins group, no more blanks. Of course that's not a workable solution.

I've tried filemon and I don't see any access denied entries. When this happens, the IIS logs look like:

2006-09-19 21:07:22 W3SVC692023 10.2.2.50 POST /index.php q=node/123/edit 80 - 10.2.3.123 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+WOW64;+SV1;+.NET+CLR+2.0.50727;+InfoPath.1) 401 1 0
2006-09-19 21:07:23 W3SVC692023 10.2.2.50 POST /index.php q=node/123/edit 80 THQINC\VOLI_Test 10.2.3.123 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+WOW64;+SV1;+.NET+CLR+2.0.50727;+InfoPath.1) 302 0 0
2006-09-19 21:07:23 W3SVC692023 10.2.2.50 GET /index.php q=home_boy 80 - 10.2.3.123 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+WOW64;+SV1;+.NET+CLR+2.0.50727;+InfoPath.1) 401 1 0
2006-09-19 21:07:23 W3SVC692023 10.2.2.50 GET /index.php q=home_boy 80 THQINC\VOLI_Test 10.2.3.123 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+WOW64;+SV1;+.NET+CLR+2.0.50727;+InfoPath.1) 200 0 0
2006-09-19 21:07:35 W3SVC692023 10.2.2.50 GET /index.php q=tracker 80 - 10.2.3.123 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+WOW64;+SV1;+.NET+CLR+2.0.50727;+InfoPath.1) 401 2 2148074254
2006-09-19 21:07:35 W3SVC692023 10.2.2.50 GET /index.php q=tracker 80 - 10.2.3.123 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+WOW64;+SV1;+.NET+CLR+2.0.50727;+InfoPath.1) 401 1 0
2006-09-19 21:07:35 W3SVC692023 10.2.2.50 GET /index.php q=tracker 80 THQINC\VOLI_Test 10.2.3.123 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+WOW64;+SV1;+.NET+CLR+2.0.50727;+InfoPath.1) 200 0 0

(created a silly page called Home_Boy as a test, got a blank page). Happens with IE on 32 bit as well, so don't worry about that. Happens to more than one user.

No failures in NT security log after setting audit settings for fail on a test user.
Nothing interesting in the PHP logs. php.ini memory is 30 megs. But absolutely no blank pages when adding a user to the local admin group which leads me to believe it's a strange permissions issue.

Any ideas?