when using history in tabs and the first pageload does not contain a hash-tag, the 1.2.2 history version adds an empty hash to the url, which some of our users reported causing (non-reproducable) page loading problems in IE6/7.
this can be prevented by changing line 94 in history.js:
(check for emtpy hash: needed for ie < 8)
this can be prevented by changing line 94 in history.js:
if (hash != '' && hash != '#')
window.location.hash = hash;
(check for emtpy hash: needed for ie < 8)
