Trac issue tracker is slow

[Ryan Schmidt]

The Trac issue tracker is very slow, and it has been for weeks, maybe  
months.

View a ticket: 10 seconds
Preview a change to a ticket: 10 seconds
Make a change to a ticket: 14 seconds
Show the New Ticket form: 6 seconds
Show the Custom Query page: 10 seconds
Find all non-closed tickets with "mysql" in the summary: 19 seconds

The Trac repository browser is fast. The Trac wiki is fast. Can the  
Trac issue tracker be sped up any?