Update Rollup 3 for Exchange Server 2007 SP1 and Update Rollup 7 for Exchange 2007 RTM have been released

Since this is some kind of MS Blog or people who worked/work for Exchange even as VMP. Could someone state if it's a good idea to install the Update Rollup 3 (For SP1) with all the problems or glithces mentioned here.

1) Some Service does no restarte after update
2) HOTFXIES between the major Rollup have to be deinstalled
3) There is some kind of licence server which has to be connected trough or without proxy.

If you have CAS and HUB-MAILBOX. In wich order should the Patch be applyed?

Does this rollup fix any issues in terms of cpu store.exe around 99% while users logon/Logoff with Outlook fatclient? (Mixed mode with Exchange 2003)

Any others issues or important things to take care of?

Thanks in advance.