Googlebot, jsessionid's and the fact my page one rankings are gone

JSession ID's

[dchamp]

At the beginning of the month I saw one of my clients consistent, number one rankings for a keyword phrase dwindle. To the best of my knowledge nothing was changed. I see now JSID's are showing up in my URL's..we removed them earlier. Anyone shed some light?

[g1smd]

People may have already linked to your site with the IDs still in their link. You will have to try to track them down and ask for the link to be amended.

Additionally, Google will remember any "200 OK" URL that it has previously seen and keep on requesting it for several years after (even if no-one links to it). If it continues to return "200 OK" then they will come back for it from time to time, forever.