Microsoft recently introduced Microsoft Dynamics CRM Rollup 8 (it is available here). It has some nice fixes and updates over Rollup 7, which we detailed in our post located here called "".
Our friends over at the Microsoft Dynamics CRM Team Blog have this post about it:

Update Rollup 8 for Microsoft Dynamics CRM 4.0
The Microsoft Dynamics CRM Sustained Engineering team will release Microsoft Dynamics CRM 4.0 Update Rollup 8 on Thursday, December 17, 2009.
Once the release is available the links below will take you to the necessary information about Update Rollup 8.
General Details about Update Rollup 8
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Update Rollup 8 is cumulative. However, the Update Rollup 8 CRM Client and Data Migration Client
packages require Update Rollup 7 to be installed. For all other CRM components you do not need to install any previous Update Rollups prior to Update Rollup 8
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The Update Rollup 8 download contains updates for the 40 supported Language Packs. Prior to installing the Update Rollup 8 Language pack you must install the original
Language pack.
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Download the Update Rollup 8 Language Pack
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Install the Update Rollup 8 Language Pack
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De-provision the Language Pack
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Re-provision the Language Pack
Microsoft Dynamics CRM E-mail Router
Update Rollup 8 adds support for Exchange 2010. However, the Update Rollup 8 Rule Deployment Wizard does not yet support Exchange 2010. We are working to add that support in future Update Rollups.
How to get support for Update Rollup 8
To get support please contact Microsoft Product Support. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site: http://support.microsoft.com/default.aspx?scid=fh;%5bLN%5d;CNTACTMS
Note: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
UPDATE/WARNING: There is an issue associated with Enterprise deployments of Microsoft Dynamics CRM that the Rollups have not corrected yet. This issue appears to be related to the fact that while the Rollup remediates all existing databases/instances of Microsoft Dynamics CRM, when you go to redeploy a NEW instance (i.e. tenant) of Microsoft Dynamics CRM, the "SubscriptionManuallyTrackedObject" table is not there and you will get an error on all new instances unless this table is manually copied from a remediated database, or the most current Rollup version is applied to the server again after a new tenant is provisioned.
The specific error you might receive is this:
Generic error:
"A SQL Server error occurred. Try this action again."
This error will show in the Trace Log:
"Invalid object name 'SubscriptionManuallyTrackedObject'"
This issue and fix is documented at the EMEA Dynamics CRM Support blog located here.