Of all clue types, anagrams are the easiest to recognize. For the setter to camouflage the anagrind, prepare an inconspicuous fodder and at the same time play by the rules, can be a pretty tough challenge.
What is a smart way to make anagrams not so obvious? Take a tip from crime fiction. There is one criminal in the story, but you don't know who it is as half a dozen other people are equally likely to have committed the crime.
Intelligent crossword puzzles make use of the same logic. A clue or two appear to be anagrams but are not so, leaving you not-so-confident about which ones are really anagrams.
Try this -
Times 24221: Did shake obtained from milk container spill all round? (9)
If you follow the solving mode of "quick scan through puzzle for likely anagrams before anything else", chances are you'll pause here over "shake" and "spill". As it turns out, there is no anagram in this clue. (What's the answer, then? Post it in the comments section.)
More clues with nicely misleading anagram signals:
Times 24244: Upset girl's mum (8)
Guardian 24721 (Paul): End of four months in the red, becoming flexible (7)
I'll update the answers to clues after three days. Till then, have fun solving!
Update (13-Jun-09): The unanswered clues were not just solved but also dissected/re-clued. Go to the comments section for more. Thanks to Suhel, Chaturvasi, maddy and Sri for writing in.
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