Extremely slow speed on my site using codeignitor... is this normal?

[eluser]n0xie[/eluser]
I see a number of queries that are REALLY slow. Most take less than 0.002 but a couple are near 0.1. Also I see

DATABASE: couponb_voucher
QUERIES: 494

That is A LOT of queries. You should either cache a lot of these queries, or see if you can remove a lot of these.