I usually use the computer with a permanent connection to the Internet, so I hadn't noticed this problem. But lately, since I'm using also my laptop off line I started to struggle with this problem: when I use konqueror to connect to a local site, I get this error:
An error occurred while loading http://localhost:The problem occurs also when I'm connected through a 56k modem: I cannot simply connect to web hosts with konqueror.
Could not connect to host http://localhost.
Luckily, I found this post, http://ubuntuforums.org/showthread.php?t=494344, whose solution seems to work fine: just disable the cache (i.e., uncheck "Use cache"):
But this looks like a serious bug :-(