Answers: try clearing all the cache from tools, browsing history, from ur browsers, & even if this doesn't aid, go to 'recent' from the command prompt of ur laptop & delete all the files.
One more fortune is that go to the c:\documents and settings\application data\ie<browser term > and delete the temp list or pro tem internet files or the unwanted data existing in attendance.
I expect this would undoubtedly help u !!
First of adjectives clear all ur interim files and cookies by going to tools of Internet explorer n then rum expeditious scan of any anti virus u have. It will sure comfort u. .coz its happens due to slow speed of meet people connection. And dint forget to download up-to-the-minute updates of Internet explorer given on Microsoft website.
Take care
Cud b a virus coming into ur laptop from orkut try using a better antivirus