yes, it seems gmail have changed their http requests so gspace no longer worked.. thanks for finding that out
the connection js has been updated from the latest gspace and it nw connects without problem..download from this link
make sure to clear your cache before downloading because sometimes it will download same old file from the cache.
there's mail checker based on a stripped miranda plugin..displays new mail as popup..it supports accounts that support pop3 like google, yahoo and hotmail. the extension is preconfigured for googlemail yahoo and gmx to make it easy to add accounts from those services
more tutorial there:
please download it from kmext.sourceforge.net http://kmext.sourceforge.net/ext6.htm
(look for pop checker) and not from the link at the forum thread above because it's not updated there