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Dear R Users, Suppose I have a dataset like this: a b 39700 485.00 39300 485.00 39100 480.00 38800 487.00 38800 492.00 39300 507.00 39500 493.00 39400 494.00 39500 494.00 39100 494.00 39200 490.00 Now I want get a-b for all possible combinations of a and b. Using two 'for' loop it is easy to calculate. But problem arises when row length of the data set is large eg. 1000...

Hi all, I just had a panic with dovecot 1.1.6, two days after replacing 1.0.15 with it in production. Here are the logs immediately preceding the panic, I think they're related. It seems the user connected simultaneously from two different clients, from his own computer and a webmail running on the server, then manipulated mail folders on one side, and logged out. The panic occurred 3