I have the same problem as at http://support.mozilla.com/en-US/forum/1/629710?s=firefox+3.6.4+update+stuck+on+paused&as=s except it refers to 3.6.4 and I am on Win 7 as admin. I was set to be notified of updates, was notified and acepted but it stopped. Now I get the issue of pause at connecting to update server and resume is greyed out. Can I put a screenshot here? Do not want to reinstall. If download 3.6.4 manually can I install over the previous version?
I solved this by turning off tamper protection in NAV 2010. The Firefox immedately updated. I understand virus scanners/anti spyware program like spybot and SpySweeper can interfere with updates. Also Comodo AV. It seems to me that nything that protects over all system setting is worth looking at. I am not an expert. Do not forget to turn back on anything turned off to allow update