Exchange 2010 Reread Logon Quotas Interval CacheTTLUser

Greetings: is this still valid for exchange 2010 sp1 , when I change quotas on mailboxes it takes solid time before it takes effect , wondering if this applies to ex2010 sp1.  

http://technet.microsoft.com/en-us/library/bb684892(v=exchg.80).aspx

1. To configure the interval for refreshing the information for mailbox size limits, do the following:

   1. Right-click ParametersSystem, select New, and then select DWORD value.
      
   2. Name the new DWORD value Reread Logon Quotas Interval.
      
   3. Right-click Reread Logon Quotas Interval, and then click Modify.
      
   4. For the Base option, click Decimal.
      
   5. In the Value data text box, enter a positive integer specifying the mailbox information cache refresh interval in seconds, and then click OK. The default value is two hours (7200 seconds). The recommended value is 20 minutes (1200 seconds). 
      

2. To change the mailbox information cache age limit value, do the following:

   1. Right-click ParametersSystem, select New, and then select DWORD value.
      
   2. Name the new DWORD value Mailbox Cache Age Limit.
      
   3. Right-click Mailbox Cache Age Limit, and then click Modify.
      
   4. For the Base option, click Decimal.
      
   5. In the Value data text box, enter a positive integer specifying the mailbox information cache age limit in minutes, and then click OK. The default value is two hours (120 minutes). 
      

3. Locate the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess\Instance0 key. If this registry key is not present, create it using the following steps:

   1. Right-click MSExchange ADAccess, select New, and then select Key.
      
   2. Name the new key Instance0.
      

4. To configure the DSAccess cache refresh rate, do the following:

   1. Right-click Instance0, select New, and then select DWORD value.
      
   2. Name the new DWORD value CacheTTLUser.
      
   3. Right-click CacheTTLUser, and then click Modify.
      
   4. For the Base option, click Decimal.
      
   5. In the Value Data text box, enter a positive integer specifying the cache expiration interval for the user data object in seconds. The default value is 5 minutes (300 seconds).