#navigation list-style-type has circles

Today i updated to the new version and now #navigation ul from root-candys style.css has circles instead of 'none' for list-style-type. it seems that this is a fall-back scenario to system.css (as i can see in firebug, but i don't know to much about css hierarchies).
in firebug i see this:

.item-list ul li {
list-style-image:none;
list-style-position:outside;
list-style-type:disc;
}
...
#navigation ul {
<del>list-style-image:none;
list-style-position:outside;
list-style-type:none;</del>
}

but if i open the file modules/system/system.css i can't find this part. i only get this:

.item-list ul li {
  margin: 0 0 0.25em 1.5em; /* LTR */
  padding: 0;
  list-style: disc;
}

also if i try to change the relevant parts in root-candys style.css there is no effect. for example:

#navigation .item-list {
  font-size: 94%;
  line-height: normal;
  list-style-type:none;
}

are there any better stylists or themers out there ? muchas gracias!