Hi there
I believe they do, especially if the so called "parameter sniffing" feature of sqlserver is still around. Run something like this for example:
DBCC SHOW_STATISTICS (mytable, PK_MyPrimaryKey)
this returns info similar to what I would expect for disribution statistics with a date of the refresh.
Cheers
Chris K
Chris Kempster
www.chriskempster.com
Author of "SQL Server Backup, Recovery & Troubleshooting"
Author of "SQL Server 2k for the Oracle DBA"