Cache error: duplicate entry (Drupal 4.52)

Hi!
:-)
I found some posts about this cache problem but they seemed outdated or unsolved, so I'm creating this new thread.

I enabled cache support for a Drupal (4.52) powered site 3 days ago and since then watchdog reported the following error twice:

user error: Duplicate entry 'http://xxx.xxx.xxx/index.php?q=image/tid/105' for key 1 query: INSERT INTO xxx_cache (cid, data, created, expire, headers) VALUES

(the first time was 'q=node/297' and not 'q=image/tid/105')

Now I'm trying to find out 2 things:

1) Did this error affect the visitant experience while navigating?

2) How could I fix this? =->

If someone can help me out, thanks in advance. ;-)

Ah, for now I disabled cache supporting. With ou without cache supporting Drupal is still the best software I've ever worked with!

Thanks,
Emiliano.