Week ago I installed Bitdefender Antivirus 2009 on my laptop and in last two days my Bitdefender Antivirus has not been able to perform an upgrade.

I tried both solution
1) Start-run.services.msc, etc...
2) Installing "update_unavailable_patch"
Nothing helped. I don't have any firewall and I even tried to disable windows integrated firewall.
I even did Bitdefender free online scan and it showed that my laptop is virus free.
Then I scanned for malware and spyware with two additional programs and it showed that computer is clean.
I downloaded update file manually but this is only temporary solution.
Internet connection is "clean", no proxy.
If I try to reinstall Bitdefender, will I lose my right to register since I already registered this product?
Or any other solution, please?