This is the error from the Exchange Server 2007 RTM. Follow the Microsoft Tecnet instruction on configuring named properties and replica identifier quota change, and all steps, the next day, the erro showed  up again in the event log. The quota I setup for both of them were 32700. (I think the max is 32767 by Microsoft). Any suggestions and help?

Event Type:    Error
Event Source:    MSExchangeIS
Event Category:    General
Event ID:    9667
Date:        10/21/2009
Time:        1:32:59 PM
User:        N/A
Computer:    EXCHANGE
Description:
Failed to create a new named property for database "First Storage GroupMailbox Database" because the number of named properties reached the quota limit (8192).
 User attempting to create the named property: "NETWORK SERVICE"
 Named property GUID: 00020386-0000-0000-c000-000000000046
 Named property name/id: "x-zxuwl"

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 5b 44 49 41 47 5f 43 54   [DIAG_CT
0008: 58 5d 00 00 46 00 00 00   X]..F...
0010: ff 34 1b 00 00 00 00 00   ÿ4......
0018: 00 02 38 00 00 00 3a 67   ..8...:g
0020: f0 1f 56 00 00 00 db 18   ð.V...Û.
0028: 40 10 0f 01 04 80 fd 79   @....€ýy
0030: 20 10 00 00 00 00 db 18    .....Û.
0038: 40 10 0f 01 04 80 03 59   @....€.Y
0040: 20 10 00 00 00 00 03 59    ......Y
0048: 20 10 00 00 00 00 03 59    ......Y
0050: 20 10 00 00 00 00          .....