Exchange ActiveSync problems

Hello,

I have a HTC Android phone and have been using the Exchange ActiveSync for several months without any problems, until now. Since a few weeks back, it seems that my mobile phone has been having trouble synching the contacts from Zoho. I haven't changed the configuration or anything.

In the mobile phone I go to Accounts & sync -> Exchange ActiveSync. If I click on Sync Now, email gets synched correctly, but when it start synching contacts it stays there forever, without erroring or anything. The problem with this is that the phone keeps trying to connect and this drags a lot of battery power.

Any ideas on why this could be happening?

Thanks,
Alfredo