Hi, we experience the following issue: We go to a webpage containing a java applet, but it fails. Here is a snippet of the squid access log. There are a total of 9 requests for .class file for the Applet. The proxy received the first and the last requests successfully as they are indicated by HTTP code 200. However, the proxy received HTTP code 400 for the others in between, which means the Proxy cannot load them successfully. 1126121818.965 37 10.36.56.43 TCP_MISS/200 2123 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/swingCheck.class - DIRECT/198.103.238.143 application/octet-stream 1126121819.275 28 10.36.56.43 TCP_MISS/404 1882 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/javax/swing/JApplet.class - DIRECT/198.103.238.143 text/html 1126121900.347 26 10.36.56.43 TCP_MISS/404 1882 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/jands/javax/swing/plaf/basic/resources/basic_en_US.class - DIRECT/198.103.238.143 text/html 1126121901.054 50 10.36.56.43 TCP_MISS/404 1882 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/jands/javax/swing/plaf/basic/resources/basic_en.class - DIRECT/198.103.238.143 text/html 1126121901.697 4 10.36.56.43 TCP_NEGATIVE_HIT/404 1892 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/jands/javax/swing/plaf/basic/resources/basic_en_US.class - NONE/- text/html 1126121902.322 3 10.36.56.43 TCP_NEGATIVE_HIT/404 1892 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/jands/javax/swing/plaf/basic/resources/basic_en.class - NONE/- text/html 1126121903.050 119 10.36.56.43 TCP_MISS/404 1882 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/jands/javax/swing/plaf/basic/resources/basic.class - DIRECT/198.103.238.143 text/html 1126121907.845 26 10.36.56.43 TCP_MISS/404 1882 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/jands/com/cbt/jasmine/Jasmine/JasmineAppleteanInfo.class - DIRECT/198.103.238.143 text/html 1126121908.413 34 10.36.56.43 TCP_MISS/200 991 GET http://www.campusdirect.gc.ca/SkillSoft/cbtlib/jcb/jands/com/cbt/jasmine/Testing/ei.class - DIRECT/198.103.238.143 application/octet-stream Accessing one of these individual class files from the Browser generates a Security Alert error message as shown below. It looks like when accessing the www.campusdirect.gc.ca Web site thru the Proxy, the Proxy cannot maintain the required security credential and forward it to the Web site Has anybody experienced something similar? Any hints how I could solve this issue? Any help is appreciated! Thank you very much! Regards, Martin