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#1
Frequent ftp and browser page/file corruption
I'm just wondering if anyone can shed any light on my issue. I've had it once before, when trying to do the same thing (OK, I know, "don't do it then", but it's nothing unusual.)
Symptoms:
- Frequent failures to load pages in Firefox and (to a lesser extent it seems) IE:
- Just get a blank page, or it never stops trying to load.
- Graphics don't load or look corrupted (image offset half way through, or unfinished).
- Get a page of code instead of it being rendered.
- Various error messages, all of which relate to bad data coming in.
- Files corrupted/truncated both ways when FTP'ing to my hosting provider; no error messages!
- This does not happen to every file or website. Often, things will seem fine for a few minutes, then I get another bad image or page. FTP transfers seem to get truncated mostly, about 1 in 5 times.
What I did that seems to trigger the problem:
- Installed a second NIC, turned of all network services in its network properties to stop Windows constantly sending unwanted stuff through it.
- Installed Wireshark and winpcap, to use the new port as a dedicated monitor port in my Cisco lab.
- This, by the way, works perfectly. A nice, quiet monitor port that captured everything coming in.
After doing the above, I gradually start noticing the symptoms. The second time, I bought a new Realtek NIC instead of using a server NIC, thinking the drivers I had to faff about with on that NIC were probably the cause. Nope, it still happens. The PC had had a complete wipe and reinstall between the two times.
I've tried resetting winsock and tcp, and reinstalling the latest NIC drivers. I even reinstalled my browsers. Nothing made any difference. I also restored the default settings for the NIC (in network properties) as if I hed never changed anything. Still no difference.
Only a roll-back to before I installed the card and wireshark helped this time, at least so far (it's only been about ten minutes but I haven't noticed the problems yet). Last time I just wiped the OS.
So... anyone seen anything like this before? I really want to be able to use my monitor port for labbing.