CHILL!! R.E.L.A.X!!! Not everyone gets approved the same day of their interview. You are freaking out needlessly - and not quite an hour after your interview.
Plus the IO knows they need to request your KCC file, he told you he's waiting for a file from DOS, didn't he?
Thanks a lot Mom for the reply. Yeah he said so. I was freaked out because KCC lady I talked with today said he did not request it and asked me to call them everyday to make them ask the file, but there is actually no contactable number in FO (only a recording) and the infopass appointments available are only after one in two weeks. And was worried since he said he will approve today itself if there is no problem and didn't. But you are right, everything will be fine hopefully. Your reply sure did make me feel better, just as always.