navigation in a “category” – wordpress error ?

hello.

i’m italian and i’m a new user in this forum.

i have a problem. i use WordPress 1.5.2 (transalte in italian) and “default” theme.

when i try to navigate in a “category” of my blog, i can see a link above in the page “<< Previous Page” (translated in italian is “? Post precedenti”)

but if i click this link i don’t go in the previous page of the specific category!! i go in the page number 2 of my blog !! (no page number 2 of specifica category)

at the moment, the file of my theme “archive.php” is so:

<div class="navigation">
<div class="alignleft"><?php posts_nav_link('','','&laquo; Post precedenti') ?></div>
<div class="alignright"><?php posts_nav_link('','Post successivi &raquo;','') ?></div>
</div>

is there a wordpress 1.5.2 error?

please tell me more info in easy english. i’m italian and i don’t speak english very well