Can previously incorrect urls cause a -30 penalty?

[stevelibby]

i have recently discovered a error in my code in that pages that are supposed to read domain.co.uk/directory/page.asp?id=1 was reading domain.co.uk/?id=1 until i fixed it can this cause a - 30 penalty?

[tedster]

The true minus 30 penalty was historically applied for serious attempts to manipulate Google that created a major loss of trust. But the error you described certainly could harm your rankings - hard to say by how many positions. Glad you found and fixed it.

[stevelibby]

well that blows my hopes of regaining the natural number position when typing domain into the search box. I have done absolutely everything to regian this but i have now run out of ideas as that was my best hunch, i have checked all text colours, links also many other fixes inc canconical.
Anyone got some ideas..maybe a checklist

[Hissingsid]

Hi Steve,

I would try and get some links back from high trust sites and directories now you have fixed the problem.

Cheers

Sid

[stevelibby]

can you give me some ideas on what and how to look for a trust site. Does a high trust site have high pr?