Does squid eat much of CPU?

[Payungsak Wanthaneeworakul]

Now I use squid version 2.1 PATCH2 on Linux 2.0.36. Since this morning,
I have suffered from the overloaded CPU. Its utilization has been over
90 %. This makes the internet surfing through squid very slow in
comparison with direct connection.

How can I solve this problem?

Thank in advance
Payungsak Wanthaneeworakul