Google Penalized One keyword

#1 in allinanchor and not even in the top 100 results

[Bonusbana]

I have a section on a site that is very popular and has recieved a high amount of backlinks & visitors. Google indexed the site and it is in the top 10 for several keywords. However, one keyphrase (wich btw contains the word "free") seems to be banned by google.

A search for allinanchor for the keyphrase puts the site #1 and in msn it has the #1 position. Google doesnt even include it in the first 100.

Ive read about sandbox etc, but since google likes the site for all other keywords, it doesnt make sence. I have not used any spam-related techniques or anything like that.

Should I ask google why, or is it common that google penalizes sites for single keywords? In that case, could the word "free" be the answer? And if so, how do I work around that?

thanks.

[Bonusbana]

anyone?

[cbpayne]

Sandboxed.

[Spica]

same problem discussed here:

[webmasterworld.com...]