Issue with Exchange 2007 Services Stopping

I've been fighting this issue for over two weeks.  I need guidance ASAP.

Event Type:      Error
Event Source:      MSExchange System Attendant Mailbox
Event Category:      General
Event ID:      4002
Date:            11/7/2009
Time:            5:36:16 AM
User:            N/A
Computer:      SMOKESIGNAL
Description:
An unexpected failure has occurred. The problem will require administrator intervention. The service will retry in 56 seconds. Diagnostic information:

Cannot open mailbox /o=OST/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=SMOKESIGNAL/cn=Microsoft System Attendant.
Microsoft.Exchange.Data.Storage.StoragePermanentException: Cannot open mailbox /o=OST/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=SMOKESIGNAL/cn=Microsoft System Attendant. ---> Microsoft.Mapi.MapiExceptionNotPrivateMDB: MapiExceptionNotPrivateMDB: Unable to open message store. (hr=0x80004005, ec=1163)
Diagnostic context:
    Lid: 18969   EcDoRpcExt2 called [length=243]
    Lid: 27161   EcDoRpcExt2 returned [ec=0x0][length=92][latency=0]
    Lid: 23226   --- ROP Parse Start ---
    Lid: 27962   ROP: ropLogon [254]
    Lid: 17082   ROP Error: 0x48B    
    Lid: 26937  
    Lid: 21921   StoreEc: 0x48B    
    Lid: 27962   ROP: ropExtendedError [250]
    Lid: 1494    ---- Remote Context Beg ----
    Lid: 26426   ROP: ropLogon [254]
    Lid: 17097   StoreEc: 0x48B    
    Lid: 8620    StoreEc: 0x48B    
    Lid: 1750    ---- Remote Context End ----
    Lid: 26849  
    Lid: 21817   ROP Failure: 0x48B    
    Lid: 26297  
    Lid: 16585   StoreEc: 0x48B    
    Lid: 32441  
    Lid: 1706    StoreEc: 0x48B    
    Lid: 24761  
    Lid: 20665   StoreEc: 0x48B    
    Lid: 25785  
    Lid: 29881   StoreEc: 0x48B    
   at Microsoft.Mapi.MapiExceptionHelper.ThrowIfError(String message, Int32 hresult, Int32 ec, DiagnosticContext diagCtx)
   at Microsoft.Mapi.ExRpcConnection.OpenMsgStore(OpenStoreFlag storeFlags, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, MapiStore msgStorePrivate, String& correctServerDn, ClientIdentityInfo clientIdentityAs, String userDnAs, String applicationId, CultureInfo cultureInfo)
   at Microsoft.Mapi.ConnectionCache.OpenMapiStore(String mailboxDn, Guid mailboxGuid, Guid mdbGuid, ClientIdentityInfo clientIdentity, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId)
   at Microsoft.Mapi.ConnectionCache.OpenMailbox(String mailboxDn, Guid mailboxGuid, Guid mdbGuid, WindowsIdentity windowsIdentityAs, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId)
   at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry)
   --- End of inner exception stack trace ---
   at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry)
   at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry)
   at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString)
   at Microsoft.Exchange.Data.Storage.MailboxSession.Initialize(LogonType logonType, ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags)
   at Microsoft.Exchange.Data.Storage.MailboxSession.CreateMailboxSession(LogonType logonType, ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags, CultureInfo cultureInfo, String clientInfoString)
   at Microsoft.Exchange.Data.Storage.MailboxSession.OpenAsAdmin(ExchangePrincipal mailboxOwner, CultureInfo cultureInfo, String clientInfoString, Boolean useLocalRpc, Boolean ignoreHomeMdb)
   at Microsoft.Exchange.Data.Storage.MailboxSession.OpenAsAdmin(ExchangePrincipal mailboxOwner, CultureInfo cultureInfo, String clientInfoString)
   at Microsoft.Exchange.Servicelets.SystemAttendantMailbox.Servicelet.Work()

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.


Event Type:      Error
Event Source:      MSExchangeTransport
Event Category:      TransportService
Event ID:      12014
Date:            11/7/2009
Time:            5:33:43 AM
User:            N/A
Computer:      SMOKESIGNAL
Description:
Microsoft Exchange could not find a certificate that contains the domain name SMOKESIGNAL.ch13-12westtex.org in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector Default SMOKESIGNAL with a FQDN parameter of SMOKESIGNAL.ch13-12westtex.org. If the connector's FQDN is not specified, the computer's FQDN is used. Verify the connector configuration and the installed certificates to make sure that there is a certificate with a domain name for that FQDN. If this certificate exists, run Enable-ExchangeCertificate -Services SMTP to make sure that the Microsoft Exchange Transport service has access to the certificate key.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type:      Warning
Event Source:      MSExchangeTransport
Event Category:      TransportService
Event ID:      12024
Date:            11/7/2009
Time:            5:33:43 AM
User:            N/A
Computer:      SMOKESIGNAL
Description:
Microsoft Exchange could not load the certificate with thumbprint of B535C1C5D4FA4B6DAD36DB35086A672CE0E303BD from the personal store on the local computer. This certificate was configured for authentication with other Exchange servers. Mail flow to other Exchange servers could be affected by this error. If the certificate with this thumbprint still exists in the personal store, run Enable-ExchangeCertificate B535C1C5D4FA4B6DAD36DB35086A672CE0E303BD -services SMTP to resolve the issue. If the certificate does not exist in the personal store, restore it from backup by using the Import-ExchangeCertificate cmdlet, or create a new certificate for the FQDN or the server enabled for SMTP by running the following command: New-ExchangeCertificate -DomainName serverfqdn -Services SMTP. Meanwhile, an ephemeral, self-signed certificate with thumbprint 324106A0F1F4CC6BAFC4500A59006A7A6C6EEBEE is being used.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.