Firefox problem from vista-DEP

Am si eu o problema de cate ori dau close la firefox imi apare eroarea aceea de la Vista-Data Execution Prevention DEP.
Eroarea ar fi asta:
Problem signature:
Problem Event Name: BEX
Application Name: firefox.exe
Application Version: 1.9.0.3188
Application Timestamp: 48dae60e
Fault Module Name: npcomm.dll_unloaded
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 49018c84
Exception Offset: 02ff584f
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.0.6001.2.1.0.256.1
Locale ID: 1033
Additional Information 1: 2b5e
Additional Information 2: d41d8cd98f00b204e9800998ecf8427e
Additional Information 3: 2bd5
Additional Information 4: 9495ca04acc0a83c6578a0487adcce54
Cine-mi poate oferi o solutie fara sa fie neaparat necesara oprirea DEP.

nu exista fix pentru asta inca.
bugul a fost inregistrat pe bug tracker: https://bugzilla.mozilla.org/show_bug.cgi?id=440969

Poate fi cumva cauzata aceasta problema si de filtrul AntiPhishing de la bitdefender,deoarece azi cand am fost la un prieten si i-am instalat bitdefender total security 2009, i se inchidea dupa anumite momente firefoxul,chiar daca avea XP2.
Add-ons: {73a6fe31-595d-460b-a920-fcc0f8843232}:1.8.4.1,FFToolbar@bitdefender.com:2. 0,{972ce4c6-7e08-4474-a285-3208198ce6fd}:3.0.3
BuildID: 2008092417
CrashTime: 1226513969
Email:_______________
InstallTime: 1225993957
ProductName: Firefox
SecondsSinceLastCrash: 1237
StartupTime: 1226513792
Theme: classic/1.0
URL:________________
UserID: f7233f35-d8f5-4429-92c0-e071f99fac72
Vendor: Mozilla
Version: 3.0.3

nu stiu daca e aceeasi problema. al doilea log pare un crash "normal".
al tau, in schimb, este cauzat de activarea bitului nx (http://en.wikipedia.org/wiki/NX_bit).
daca ai deja un ativirus bun, il poti dezactiva. nu e nevoie sa-ti transformi cacluatorul intr-un buncar.

Am incercat sa adaug firefox in lista de exceptii DEP,insa nu merge imi da un mesaj de genul DEP trebuie sa fie ON pentru acest tip de program.
Am dezactivat filtrul AntiPhishing de la bitdefender si se pare ca nu mai imi da erori cand inchid programul,insa deoarece am BIS2009 cu licenta nu stiu daca nu ar fi fost mai bine sa dezactivez DEP si sa las mai bine filtrul? Si daca da as vrea sa stiu daca exista o varianta mai simpla de a opri DEP in afara de asta:

Start -> Run... -> cmd -> enter.
type the following commands:
cd\ (this should bring you back to the root of C:
attrib -r -s -h boot.ini (enter)
edit boot.ini (enter)
look for a line that starts with
"multi(0)disk(0)" and at the end of this line find "/NoExecute=OptIn"
Change it to /NoExecute=AlwaysOff (Make sure of the capital letters)
Click on File -> Save
Click on File -> Exit. (this will bring you back to dos) enter the following command.
attrib +r +s +h boot.ini
Reboot the computer and DEP is now disabled.