Sudden drop in indexed pages

This is strange thing that happened with me yesterday. My site is having around 300+ pages and all were indexed in Google till some time back. Yesterday I noticed that there are only 6 pages now remaining in the Google index. The ranking for keywords haven't changed. The listing are still showing the URLs from my site those are not currently in the site: mysite. com. I thought that it may be due to some server updation but the problem is still existing today. Is there anything for me to worry?

With regards,
Mandar Thosar

site:mysite.com searches are known to be inaccurate, so don't rely on those for anything.

I've noticed that some of my smaller sites have been going up and down with the site: command. Maybe google is getting ready to dance?

THere seems to be alot of movement going on above the normal database daily shifting

Did see one new site get pr on the tool bar and another site show pr jump

THis does happen before an update but last time I sore this on a site it did not role out for 5 weeks

Soooooooooo... chill and do not worry about it as pr and the site: are what I call " just for fun " ( unless your site jumps to a 7 then you love PR )