Stef you can try the last post in this thread;
http://sandboxie.com/phpbb/viewtopic.php?t=2046
Hank hasn't checked back in as yet to give us the results but I remember at that time the combatability flag key was a big thing although the details escape me. I am also on XP SP2 I know that fix was for IE6 but it may work here also
mitch
or you can google that key number to investigate futher

Checked for that registry value which was there (compatibility flags) and set to "zero". Removed it and re-added with no apparent change: IE6 still loads megaupload with no oveahead both in sandbox and no sanbox modes. Firefox still gets 90%+ when sandboxed, low usage when not using sandbox. Also tried turning off my anti virus (Avira AntiVir) and my firewall (Tiny Personal Firewall) but no luck :@

Man, one time IE is no good and Firefox is - next time just the opposite.

note to Tzuk- please invent a SandboxieFlashPlugin in the new GUI.

Is there anything else I could possibly turnoff/remove/reinstall for further debugging? please dont tell me to reinstall windows, I'm happy with it this time and I only recently installed it - less than a month ago.

I dont see where Windows could possibly be the problem. Dont give up, a lot of folks check this forum and sometimes not every day. Windows works, Internet Explorer works, Firefox works, and Sandboxie works just fine on your system - independantly.

Just not in some combos together.
mitch

There is one thing you could try, you could do a trace with Sandboxie and see if a certain resource is being blocked. To find out how to do a trace, check here, if you have any questions about tracing, just ask.

Try adding an OpenFilePath to your FF plugins directory -

OpenFilePath=firefox.exe,[path\to\plugins\dir]

This worked for me on the system I was having trouble with (I honestly don't know why though).

This is the trace I get when running sandboxed Firefox and surfing to megaupload, these trace lines repeat themselves roughly every 0.001 of a second until I get bored and decide to stop the event capture

The way I understand it - process ID 3724 (Identified this one as the sandboxed instance of Firefox) is allowed to access (OpenFilePath) the flash plugin (NPSWF32.dll - the file is there, I double checked). I dont see anything being denied and can't see anything wrong here but this is my first time doing this so I might have missed something...


EDIT: Tried adding that OpenFilePath to the plugins dir but that didnt seems to have changed anything either.

Oh yeah, the newer versions of the Flash plugin installs to the WINDOWS directory. Try adding

OpenFilePath=firefox.exe,C:\WINDOWS\system32\Macromed

as well. I use the FF plugins directory for the OpenFilePath on my portable installation.

There is a known issue with pipelining breaking flash. Make sure FireFox is configured with pipelining disabled:

network.http.pipelining = false

Type "about:config" (without the quotes) in the address bar from an unsanboxed FireFox session. Search for the above. Double click to change if necessary.

I had this issue.

Curious, what exactly does that setting mean/do? And what else would it affect?

EDIT - that's probably not the problem though. FALSE is FF's default setting.

A lot of folks are enabling pipelining. This tells the browser to set up multiple streams to each IP address. Supposed to make browsing faster. Anyway, it looks from the trace like needed resources are being blocked, so this is probably not the issue.

I know this is off topic, but that pipelineing sounds like a bad thing, just like download accelerators that do the same thing. It eats resources from other users trying to use the same server (probably more of a problem with file servers and downloads, admittedly).

I agree. I have read that some users are enabling as many as 30 pipes. What a waste of bandwidth. Most sites the pages are to small to even benefit from it.

I am reading the trace wrong? It looks as though in addition to the Flash directory being blocked, so is the sandbox folder? Was the sandbox folder set to C:\ via the GUI, or by manually editing the config file?