WinME and Win2k running the 2001-04-12-12 builds. I'd like to suggest some specific cache work (if that's where the problem is). There seem to be two things going on which, if fixed, would make many users quite happy. First, even though I'm visiting pages within the same site, the browser often insists on performing redundant DNS lookups. It says "Resolving www.yahoo.com" quite a lot, for example, even when I'm already at that site. IE and Communicator 4.x do not seem to exhibit this behavior. Second, the browser does not seem to look for page data when I hit Back or Forward. It usually says "Tranferring data from dir.yahoo.com" when I expect it to just pull that data from the cache. IE 5.5 does not seem to work this way, and is very fast with Back and Forward operations. I have not yet tried Communicator. The difference is 1 to 5 seconds with Mozilla vs. perhaps 100-500 miliseconds for the same pages in IE 5.5. You can see this behavior much more clearly if you access the Internet via a 56kb modem.

This is really two different bugs reports. The DNS caching issue is covered by bug 30917, which I hope to have time to fix for 0.9.1. The other issue concerning history's use of the cache has been fixed with Darin's recent landing (April 13th?) of revisions to HTTP's validation logic. Try out a recent build and you should notice an improvment. Also, double check your page validation settings in the Advanced/Cache preference panel; you probably want to set yours for "Automatic". I'll mark this a dup of bug 30917. *** This bug has been marked as a duplicate of 30917 ***

qa to me.

VERIFIED: dupe -> networking