am i sandboxed by big G?

hi, everyone, just checked my rank and site and found:
1.google spider never comes to my site since the day before yesterday
2.when i search site:mysite.com in google, i can not find my main page on the first page
3.when i search my ranked key words from last week,i can see my rank there,but, only my site's url and name, no any other descriptions and data under the url and name.
4. my indexed page no is increased,when i search site:mysite.com in google

am i sandboxed? if the answer is yes, what should i do to recovery my site?

many thanks

btw what sandboxes means ??

The Google Sandbox Effect is a theory used to explain why newly-registered domains or domains with frequent ownership changes rank poorly in Google Search Engine Results Pages (SERPS). In other words new websites are put into a "sandbox" or a holding area and have their search ratings on hold until they can prove worthy of ranking.

Try site:yourdomain.com or info:yourdomain.com in google

If your site dose not come up under site:yoursite.com it is deindexed.

i use site:yourdomain.com search in google and found my site indexed page increased from 14K to 36K,but, homepage not at first position, my rank still there and get some traffic,but, when i search keywords i ranked, only find this:

my page title
url

there have no descriptions as before