Manufacturer browser that Norway is not time to fix that only promises to release patches as soon as possible.
Holes were company Secunia (Denmark) is evaluated as the "high seriousness" , hackers can be exploited to make misleading memory, to hang Opera and in theory they can execute attack code. As researchers have published attack code to prove the concept to the web bug affects Opera 10, including the Opera 10:50.

First, Opera is not agreed with the Review of the Secunia and affirmed that bug is not security because hackers can just hang your browser can not gain control PC. However, after being reminded Secunia and investigate further, Opera admits flaws could be exploited.

Only versions of Opera for Windows is "sticky" problems. In the meantime the patch, users can protect your PC by enabling the two security structures DEP (Data Execution Prevention) and ASLR (address space layout randomization). Microsoft to DEP with Windows XP Service Pack 2 (SP2) in 2004, with Windows Vista ASLR feedback in 2007. Windows 7 is the second structure.

According to NetApplications.com (U.S. companies), Opera is about 2.4% of global browser market share left by Stat Counter (companies Ireland), Opera, about 2% of the global browser market share and 4.3% market share in Europe.