Temp tables in SQL Server 2005 not automatically dropped

Question

I\'m troubleshooting a nasty stored procedure and noticed that after running it, and I have closed my session, lots of temp tables are still left in tempdb. They have names

Answer 1

http://www.sqlservercentral.com/Forums/Topic456599-149-1.aspx

If temp tables or table variables are frequently used then, instead of dropping them, SQL just 'truncates' them, leaving the definition. It saves the effort of recreating the table next time it's needed.