Vista - Downloading old messages

Hello,

I'm using WLM since the first stable release, the previous versions was
downloading all messages from my inbox, and email folders from my hotmail
account; the issue that recently WLM dosn't download all messages, I don't
know why, even when I install a new fresh one!

i.e.: I have 5835 emails appears in web browser in a folder, but in the same
folder in WLM it shows just 2579 emails!

I'm using my hotmail account for archiving emails, and I want to benifit
from the fast search option for all new, and old emails.

The question is:
Is there any download limitation? How could I make WLM download all emails
from my hotmail account?