Firefox and the sandbox

[walt9817]

I have used firefox sandboxed for several years with no problems. I just activated a new computer and downloaded both the most recent version of both Firefox and of Sandboxie.
Everything works well for about 10-15 minutes, and then my keyboard strokes take painfully long to show up on the screen (I can write almost a whole sentence before the first letter appears ... they all do eventually).
And, the mouse cursor is very slow ... I click on something and it takes many seconds for a response.
If, I then turn off Firefox, clear the sandbox and start again all is well ... for about 15 minutes and then the problem recurs.
It is so slow I have started writing my emails in notepad and then copying and pasting them, which works OK.
this slowing down of the keyboard does not affect
programs outside of Firefox (msword, notepad, etc).
The problem also occurs in Firefox not sandboxed).
I have uninstalled sandbox and the problem still occurred in Firefox (and I.E. when I tried that), and I also reinstalled Firefox ... but problem still with me.
Right now I am in Firefox and things are working 100%. Maybe just writing about it here has cured the problem (don't really believe in magic).
I've checked the task manager and Firefox is always the program using the most memory, but that's always been true. System is second big user.
Thanks for any good ideas.

[George]

Hi walt9817,

I have moved your thread here. This is the better place to get help. The other forum is for the TSA site only.

[walt9817]

I have tried multiple things and nothing fixes the problem. I thought it might be a bad connection and so changed the connection to the router (wife's computer works off of the same router and she has had no troubles at all with internet connections).
No improvement. Have sometimes gotten a message in gmail account that there is an internet connectivity problem, but next time I log on to Firefox things are OK again ... for a while. The mouse response slowness is particularly frustrating. The keyboard response I deal with by writing in notepad and then copying and pasting in my gmail.l
Does anyone have any ideas about what this problem could be caused by???

[bo.elam]

Hi Walt9817, you using Sbxie I feel 99.999% that you are not infected,
but you mentioning keyboard here and keyboard there makes me feel
like running MBAM. Maybe you ought to check your PC for Keyloggers
and Rootkits, and Malwarebytes is very good to start with. Probably
I am wrong thinking this, but MBAM only takes a few minutes to check
your PC, so its worth doing it.
Good luck
Bo

[walt9817]

Well Bo, I did run MBAM and it did pick up (and disable) 2 program (RelevantKnowledge and Revelation, a password decoder).. Both are now gone from the computer, the registry is free of them, and so far things are working well. May be too early to celebrate as the problems usually don't show up for 10 minutes or so, but I'm keeping my fingers crossed that you have solved the problem.
Thanks now and a million thanks if it is really the solution!
Walt

[walt9817]

Here we are several hours later and it seems the problem is really cured. Again, many, many thanks to Bo for the idea!!
Walt

[bo.elam]

Hi Walt9817, great to know the problem is taking care of.
I did come across RelevantKnowledge before on a friend of
mine s computer and MBAM did fix it for him just like it did
for you. Since you are using Sbxie make sure you only allow
FF to have Internet access and start and run. You probably
know but if you did not, this restrictions would keep KL from
sending information out and in most cases they wont even run.
If I was you I would also uninstall FF and Sbxie and re install
again just to be safe.
Bo

[Sope]

Originally Posted by walt9817

I just activated a new computer and downloaded both the most recent version of both Firefox and of Sandboxie.

If I was you I would also try to work out how these malwares got onto your newly activated computer in the first place. I would think they must originate from some other software you've installed on your new PC?

[bo.elam]

Healthy advice Sope.
Bo