Hi faycal and haku, and welcome to the forum.
I haven't ever seen a specific fix for this issue (unless I missed it). I've had it happen on my XP machine, and then for whatever reason, it stopped happening without my doing anything.
@haku You've had this issue before in May this year and you fixed it ...
http://forum.pirifor...ndpost&p=215188
... has anything changed since then such as a change of security software?
I could link you to many other threads regarding this problem, but they all basically suggest a small number of possibilities.
Rebooting has fixed it for some, as has the following ...
Commodo sandbox was blocking it.
http://forum.pirifor...ndpost&p=188880
REinstalling Speccy has fixed it for some. (see also haku's topic above)
http://forum.pirifor...ndpost&p=188925
Overclocking and messing with the BIOS can cause it to happen ...
http://forum.pirifor...ndpost&p=199522
Outpost Firewall can cause the issue ...
http://forum.pirifor...ndpost&p=196204
Even an overheating computer has been mentioned.
Also have a look here ...
http://forum.pirifor...showtopic=34541
The devs have looked at this in detail before, and I'm sure they'll be taking note of this thread as well.