g1smd - 10:53 pm on Feb 21, 2012 (gmt 0)
Don't use .* at the beginning or in the middle of a RegEx pattern. It is uncomprehensibly inefficient in its usage of server processor cycles.
[F,L] can be replaced by [F]. It's one of the few occasions when 'L' can be omitted. Another is when using [G].