File Not Found error.

Hello
In my Apache error-log i'm getting the following errors:
[Fri Mar 21 23:02:25 2014] [error] [client xx.xx.xx.xx] File does not exist: /xxx/undefined, referer: http://xxx/index.php?route=common/home

I can't find any problem. The error-log of Opencart is clean and also the error-log of vqmod

Can some one help me solve this??

Thank you

Henk

I'm having the same problem. Dozens and dozens of these errors, coming from my own IP when I visit my website.
And it looks like it's overloading the server CPU...

Would be cool if someone knew how to solve this!

Thanks in advance!