m_accounts->EnumerateForwards(removeAccountFromBiff, this);
m_incomingServers.Enumerate(removeServerFromBiff, this);
nsMsgAccountManager::UnloadAccounts(){  // release the default account  m_defaultAccount=nsnull;  m_accounts->EnumerateForwards(removeAccountFromBiff, this);  m_accounts->Clear();          // will release all elements  m_identities.Reset(hashElementRelease, nsnull);  m_incomingServers.Reset(hashElementRelease, nsnull);  m_accountsLoaded = PR_FALSE;  return NS_OK;}