Today 8th October onwards i find that the google talk is not sending the invisible users presence as unavailable it has added one more new presence type which has to be included in smack. Please any body reply and soon fix this.
Please ignore this question. I used a package and made a software which can show all the invisble users of google talk. Now the google has patch it on 8th October and it never shows again. The google talk has stopped sending the “unavailable” presence now and it sends only “available”. So nothing to do from your side. Hence ignore the above question.