Issue with "sort by"

[masterix]

Hi,

I have a problem with "sort by" on my pligg page. Take a look here:Medyknews.pl / Najciekawsze wiadomości

When I click on "Dziś" which means "Today" I get empty result despite there are entries added today. I have these rules in .htaccess:

RewriteRule ^opublikowane/najnowsze/$ index.php?part=recent [L]
RewriteRule ^opublikowane/dzis/$ index.php?part=today [L]
RewriteRule ^opublikowane/wczoraj/$ index.php?part=yesterday [L]
RewriteRule ^opublikowane/w_tygodniu/$ index.php?part=week [L]
RewriteRule ^opublikowane/w_miesiacu/$ index.php?part=month [L]
RewriteRule ^opublikowane/w_roku/$ index.php?part=year [L]

Unfortunately, old original URLs doesn't work as well ( I mean e.g published/today/

What can be done wrong?

Thanks for any help!