Hi,
There's more to SP2 than just a package of existing updates. While it's not
essential, it does provide changes to the operating system that help
streamline performance. FAQ's:
http://technet.microsoft.com/en-us/library/dd335038.aspx
Performance improvements? The only performance improvements MS lists
are:
"SP2 improves performance for Wi-Fi connections after resuming from
sleep mode."
That translates to "your network connections might actually come back
to life after sleep mode".
AND
"SP2 includes updates to the RSS feeds sidebar for improved
performance and responsiveness."
Ohh, delight, RSS feeds are more responsive. That was all the buzz at
the water cooler last week.