olly - 3:24 pm on Jun 9, 2010 (gmt 0)

I wonder if anybody has encountered something similar to this..

Basically we overhauled one of our websites completely. We preserved all original URLs - the changes were to do with layout, design and, in a few cases, new content.

The above went live on Friday. Approximately 2 days later the site was removed from the SERPS for some of it's major terms - these terms are competitive and we have always ranked in the top 5 due to an authoritative domain name, and on and off site SEO optimisation.

We are not too worried and speculate that the removal of the site is due to Google having flagged the site because so many changes took place - perhaps a change of this magnitude is usually synonymous with attacks or undesirable occurences.

My question is, has anybody experienced something similar to this? Do we need to be worried? Is there any way to speed up the return to the SERPS?

Thanks