Don't be too early to say no problem, Chado... Check out the release note for SP4 HF2... http://www.blackberry.com/knowledgec...03229&vernum=0
SDR 82627 "Previously, if a user turned off wireless message reconciliation on the BlackBerry device, all messages that arrived on the BlackBerry device were marked as read."
Your users will surely be confused!!! And start calling you...
Quickly grab the hotfix and patch your server!