CIS 5.5 - frequent broken network connection

I’m facing, for the third time, a strange CIS behaviour: suddently, at computer startup, network connections are broken and I get, instead of DHCP address coming from my router, the APIPA address 169.254.x.x.
I never configured any stealth zone. In the preceeding sessions everything was fine.
Maybe a failure in Comodo network filter driver?
Normally, to fix this issue, I uninstall CIS and reinstall it. Doing so, all problems are solved.
I’m wondering if there is a better method to get rid of these things…
O.S.: Windows 7 Ultimate x64 SP1, CIS 5.5.195786.1383. Only basic firewall option active, Defense+ and Sandbox off.

Try this, it worked for me on my WIN 7 SP1 x64 installation.