The Battlefield 2 Website has an update repeating a warning about dedicated stat-padding ranked recently sent to EA's ranked server partners (story). Here's the deal:

It has come to our attention that some groups that have rented ranked servers from our partners have chosen to set aside normal gameplay and enforce exploitation of the game logic. This violates EA's "Ranked Server" policy and will not be tolerated.

Groups found to be encouraging this behavior on ranked servers that they have leased risk having their servers de-listed and potentially being prohibited from leasing a Ranked server from any of our partners. Any players found on servers that have institutionalized exploitation of the game system will have their accrued stats reviewed and potentially wiped. A further investigation will be made to review the stats for all members of the group that organized the exploitation.

We have notified all ranked server partners to monitor for this sort of behavior and to report it moving forward. If you are playing on a Ranked server and observe this behavior, please report it on the forums at www.bf2rankedservers.com.