Download corruption and CRC errors.

[pazor]

I was getting sick of re downloading files using my rapidshare usuage up. Newsgroups is only £7 per month for Unlimited downloads not like RS 5gb per day. Hiroki if you find yourself a good forum which links stuff its just like using rapidshare but better IMO

[Hiroki]

Originally Posted by pazor

I was getting sick of re downloading files using my rapidshare usuage up. Newsgroups is only £7 per month for Unlimited downloads not like RS 5gb per day. Hiroki if you find yourself a good forum which links stuff its just like using rapidshare but better IMO

Any recommendations of forums? I've had a lot of help off the people on this site but I have yet to find a decent place that has what I need so I have had to resort to using both torrents and rapidshare again

[pazor]

PM sent Hiroki

[Welshchris]

Originally Posted by bilko123

Cheers man. When I phoned virgin they were just worried about the speed too. Not noticed any problem with the speeds really. I'm always downloading at 2.3mb/s with jdownloader where the problems happen all the time.

Ah well. Even if they continue on the faster line at least I can download corrupted parts quicker. If it does continue I'll probably switch isp's.

ever thought it could be the downloader ur using and not the connection?

[bilko123]

Yeah been through all this, it's not the program and it's not rapidshare because corruption occurs downloading from official sites with Firefox.

[Hom3r]

Sorry if I'm being ignorrant, but isn't upgrading going to just get the corruption quick?

[bilko123]

Well there's a chance of that, or there's a chance it's my modem in which case the upgrade provides me with a new one and also the chance a technician will be here so I can show him the problem.

The faster connection is actually going to cost me considerably less per month, so it's a good thing to do I think.

[PlanBee]

I had a problem where any exe, zip, PPT would fail but "data" files such as MP3s would download. Applications would complain about lack of publisher... solved with a tweak of the Jumbo Packet setting in the server I use to connect to the Intenet. Set it back, problem returns, get it bigger, all is good. The problem came from nowhere as the system had been just fine...All attached devices had the same issue.

(Windows Server 2008 R2 connected to VM via a couple of AV Homeplugs. Windows 7 Enterprise running on 2 netbooks, 1 Compaq, 1 Tosh, 1 Mesh...)

[graf_von_anonym]

It might be worthwhile asking on the Virgin Media newsgroup to see if they can check the UBR/cable that you are connecting through. High levels of error correction might result in corruption of downloads*, as could high CPU-utilisation or something else that is causing random packets to corrupt, which would be enough to throw off files that don't in and of themselves have error correction or are tightly compressed.

There are two reasons that phone support will be looking at speeds, and while you can probably figure the first one out yourself the second is that most of the things that would cause errors in downloads would (or at least could) cause slow speeds on your connection: packet loss; utilisation; throughput delays.

* In that while the equipment does forward error correction extremely short bursts of extremely high errors could be enough to cause the packet to be "corrected" wrong. Sudden burst noise that is short lived, spikes in data like a DDOS attack, or even some underlying condition like Additive White Gaussian Noise could be enough to distort borderline bits of signal up and throw off some packets. Effectively the density of the data that you're downloading makes it more susceptible to these issues - on images because of the nature of the encoding a duff bit or two will give you a bleary pixel or some sort of quasi-steganographic distortion. With something that requires unpacking, a handful of duff bytes could throw the whole thing off.

[smokieUK]

If you want to post a link to a file that you consistently can't download properly, I will try it and report back. Please just make sure it's a "legal" download of some sort...

[bilko123]

@Graf von anonym: Hmm sounds interesting but unfortunately I don't know much about new groups, how would I get to that and post on there? Thanks.

@smokieUK: Well I have tried it with many many different files, sometimes they work and sometimes they don't. if it was just one file i'd assume that file was corrupt. But all the files i've had corruption problems with have eventually been downloaded without them, so it's not the file.

[graf_von_anonym]

Virginmedia have a support newsgroup that gives you "direct" access to the 2nd line team. I think that there's a guide in a sticky at the top of one of the forums for it, if not it's a relatively straightforward process; do you have Outlook Express on your computer?

[bilko123]

No I don't, don't really like it, is there another way, perhaps through google??

[bilko123]

So I got 50mb installed about 10 mins ago, unfortunately the CRC errors are still there. Such a strange problem.

Will install Outlook Express and ask the 2nd line peeps what it could be. So annoying.

[smokieUK]

If you have reported the facts correctly it HAS to be something after your modem and before the "serving server". So as someone says above, get VM to check the box etc in your road.