Website really slow

seems to be a SLOW host

line 1 : 7 seconds to generate page
line 2 : 2 SECONDS to load a simple css

linw 18 and 23: 7 and 5 seconds to load SIMPLE png image

massive 1.6 MB page also slow things down

http://www.webpagetest.org/result/110301_R5_2TBA/1/details/#request2