Correction: good software ... at least initially ....

... With perfect function and speed, but with a little idiosyncratic user interface, to which one but used to it quickly. The license key sent by the seller version you can simply unlock a German, in addition downloaded trial version of the product without having to install the software on the disc at all. Perfect!

* * * * * * * U pdate * * * * * * *
Unfortunately, this was true only up to 10 days for a period of about 1 week. Thereafter, the system was getting slower and started only after several minutes of "Black Screen" (Win7 Ultimate x64, currently, on SSD). I assume that the starting method of Bitdefender (self-protection, MBR testing, driver examination prior to loading) includes a few grundsätliche problems, and also not a Windows UEFI installation (GBT) is compatible, whatever the numerous complaints of other users could explain about installation failures on Windows 8.x.
Unfortunately I also installed, or located on the system partition standalone programs by Bitdefender hampered to the point of inoperability, which is obviously not acceptable. Here, but not my program files have been lost or deleted.
The plug-ins for online banking and personal data safe also wanted to be active at all times as a plug-in in IE and Firefox, although I do not need them. . A corr activation finished Generve not jecoh, it now requires that you enter his all confidential data and on the servers ("cloud") of the Romanian manufacturer stores - so much naivety or stupidity I did but then not. After activation in the browser causes browser crashes, it will then be better to accept the bugging.

The following is an attempt, in my view, the existing advantages (+) and disadvantages (-) to explain the product:

+ Excellent virus scanning engine with a high hit rate even at Spayware / adware / bloatware
+ Very good e-mail protection (against phishing)
+ Very good web protection (warnings against against fly-by infections)
* Very good firewall with port scan blocking (against hackers)
* Very good firewall monitoring with the option of "paranoia" mode (lets you know when a program wants to access the Web)
+ Very good firewall user control (you can programms that are "phoning home" block)

- Operational problems (system performance decreases continuously)
- Startup Problems (becomes slower)
- Trouble waking up from standby or hybrid standby, "Suspend to RAM"
- The virus protection is not temporarily switched off in order to use another scanner (eg AdwCleaner, JRT, Malwarebytes, etc.)
- After uninstallation is necessary that residue removal with its own uninstall tool (in safe mode)

In summary, I can say that my impression of a per se very good, but not quite mature software.
Based on my Bases that I will therefore no longer install the purchased product.