[support] Strange Database Error

[Daniel Carrera]

Hello,

Whenever I visit a page on my Drupal 5 website I get the following warning:

user warning: Duplicate entry '2196624' for key 1 query: INSERT INTO 
accesslog (title, path, url, hostname, uid, sid, timer, timestamp) 
values('What are the Ingots?', 'node/1', '', '78.50.210.53', 0, 
'ffdknj3d71h0p3ss7d5lb8ng66', 472, 1236783811


So I go to the 'accesslog' table. I can see that key 1 refers to the 
'aid' field. I don't see anything unusual in this field. The value 
2196624 is not at all present, so how can it be "duplicate"?

I don't know what to try. Any ideas?

Daniel.