Error 2003, Can't connect to localhost (10061) [partially solved] (no replies)

Hi,
while Installing MySql server 5.5 I encountered this error:

The security settings could not be applied
Error number 2003
Cant't connect on MySQL server on 'localhost' (10061)

I solved by uninstalling the IPV6 protocol. I opened a shell window and typed:

ipv6 uninstall

After rebooting my machine I re-installed mysql successfully. The problem is that MySql translates "localhost" as "::1" (ipv6) instead of "127.0.0.1" (ipv4), so it sees it as a foreign machine.

But now I'm without IPV6. Do you think I can reinstall it without any problem or it's better to leave only IPv4 to avoid future problems?

Thanks