incorrect taxonomy_menu page when switching languages through i18n block

I have already searched all of drupal.org, as weel as Reyeros site, and google, trying to find a patch so taxonomy_menu works with i18n (or the other way around).

The problem is: when changing languages from i18n block, while displying a taxonomy_menu page for a term in one language, does not bring the taxonomy_menu page for the translated term.

Instead, the same taxonomy_menu page is called, but because its terms ID are for the prior language and not the language just selected, no content is displayed and a message is displayed.

When the normal taxonomy/term pages are used, the i18n block processes the taxonomy/term/xx url and the link in the block is for the translated taxonomy/term/yy page. It seems that the block is aware of taxonomy/term/xx->yy, but this processing in the block does not occur for taxonomy_menu.

I noticed that taxonomy_menu uses a different syntax than taxonomy/term (/aa/bb/cc instead of just cc) and because of this complexity I could not make any progress in my attempt to patch i18n block. (If the syntax was similar, this could be done with an extra "if .... /taxonomy/term/id else ..../taxonomy_menu/id")

I have tried a workaround with alt urls. For example:
These are the two taxonomy_menu pages that needed to be switched through i18n block:
pt/taxonomy_menu/5/28 (term in Portuguese)
en/taxonomy_menu/5/25 (same term but in English)

i18n block tries to switch languages as follows:
if showing in Portuguese, i18n tries to switch to English as:
pt/taxonomy_menu/5/28 -> en/taxonomy_menu/5/28 (should be .../5/25)
if showing in English, i18n tries to switch to Portguese with:
en/taxonomy_menu/5/25 -> pt/taxonomy_menu/5/25 (should be .../5/28)

So I created these two alt ulrs to work as hooks:
en/taxonomy_menu/5/28 -> en/taxonomy_menu/5/25
pt/taxonomy_menu/5/25 -> pt/taxonomy_menu/5/28

But these won't do the job, because alt urls module does not seem to detect the "en/..." and "pt/..." in the begining of the urls, so the above are never redirected.

BTW, I am using Drupal 4.5.6.

Thanks a lot again for the i18n solution! And thanks again, in advance, hoping you can help us with this issue....

Best regards from Rio de Janeiro!