I dont know about the new software, where did you downlaod it from, and is it for the usb ddongle, im still using the old software yet i have had problems while im using google on ie 6. Are you sure its a legitimate download from 3 broadband?
i dowloaded k-meleon from click here and im using that also using yahoo.co.uk as the home page and everything is now working fine now. If it was downloaded from 3 it's something new that im not aware of. im using one of the old dongles that had firewire usb lead and the software is built into the dongle ie from the sim card.