A user in another forum tried to persuade me how good Panda was. Even though I regularly test different big av products and I was 100% sure that the bear is bear and can't turn into butterfly , I decided to test myself once again . At the end I just prooved myself that the bear is still that big bear. I downloaded Panda 2011 Antivirus Pro from their servers . Installed it on my Windows 7 HomePremium - fully updated with no other security software. At first when I saw the installer about 68 MB , I though it would be compact . A mistake . After a custom install with no Panda firewall (which went fast) the problems started . The GUI crashed immediately for no reason - I could just open it but nothing else. I decided to give the computer restart . After rebooting the machine (the reboot was slow , by the way) I managed to update the program . The update was extrememly slow - the download itself fast but it was rebuiling the update file at the end . It was so long that I though it has also hung out. When it finished and I tried to open Panda's settings , the GUI again stopped working. When I open Microsoft Process Explorer I can see about 12 processes eating my resourses. About 10 minutes after program's install , it started with ads offering me buy the product . Can a user test a trial version for 10 minutes and decide if the software is good or not to advertise them ?! When I started IE to open some pages , it took a lot . When I continued browsing , pages loaded so slow that I gave up. Additionally , I find it strange that the program's kernel wanted to open a hole in my firewall (why does it need this?) The company might have good malware database (in the cloud) but the software sucks! This is bad coding , imo . 12 processes for what - for slow computer and bad user experience.