Parsing a log file with regular expressions

(?<date>d{2}/d{2}/d{2})s(?<time>d{2}):d{2}:d{2}),d{3})s(?<message>.+)

07/23/08 14:17:31,321 log
message
spanning
multiple
lines
07/23/08 14:17:31,321 log message on one line

(?<message>(.(?!d{2}/d{2}/d{2}sd{2}:d{2}:d{2},d{3}s[d{4}]))+)

(?<date>d{2}/d{2}/d{2})s(?<time>d{2}:d{2}:d{2},d{3})s(?<message>(.(?!^d{2}/d{2}/
d{2}))+)