Fastcgi timeout - and convert problem

i have 2 problems with RT…
a.) when i try to see the content of a queue often comes a
500 Internal Server error , in the log is the error

“Fastcgi: incomplete headers (0byte)” i have set timeout from 30 to 121
any ideas?

b.) i have set standart format to iso-8859-1 in the log he means
defaulting to ISO-8859-1 -> UTF-8 (path removed)
derr: [Thu Apr 3 07:55:44 2003] [error]: Encoding error: Unknown encoding

thank you