I see in my logs that there are a lot of in-the-same-second retrievals of the same issue, and I think I saw it mentioned on the list recently. I hope a few things I just noticed helps point to a fix.
I only see the double-retrievals if I click an issue that I haven't viewed recently. I haven't customized much about the index page, so I think I'm seeing the default behavior. In Firefox, none of the Title links are underlined until I've visited them once. (In IE, they're all underlined, and visited link change color.) I only see the underlines (Firefox) if I mouseover a Title. No issues with IE doing double-retrievals that I've noticed.
Anyway, if I mouseover a link and the underline appears, no double-retrieval. If no underline appears, double-retrieval. In the logs below, 2052, 2053, and 2054 have been recently visited, but 2051 has not.
220.127.116.11 - - [08/Jan/2005 12:50:46] "GET /feedback/issue2052 HTTP/1.1" 200 -
18.104.22.168 - - [08/Jan/2005 12:50:58] "GET /feedback/issue2053 HTTP/1.1" 200 -
22.214.171.124 - - [08/Jan/2005 12:51:08] "GET /feedback/issue2054 HTTP/1.1" 200 -
# next group is first retrieval of 2051 - two GETs
126.96.36.199 - - [08/Jan/2005 12:51:23] "GET /feedback/issue2051 HTTP/1.1" 200 -
188.8.131.52 - - [08/Jan/2005 12:51:24] "GET /feedback/issue2051 HTTP/1.1" 200 -
# next line is subsequent retrieval of 2051 - one GET
184.108.40.206 - - [08/Jan/2005 12:52:43] "GET /feedback/issue2051 HTTP/1.1" 200 -
I hope this is of some help. It's not a great big deal: our Roundup server is pretty lightly loaded, but on a busy machine, saving the extra GET might be a good idea.
David Hancock | firstname.lastname@example.org | 410-266-4384