CRC errors on rar files

[pazor]

Hi there.

Hopefully someone can help me with a problem i have been having.
Whenever i download rar files about 60% of them are corrupt. I have to delete and redownload them sometime it can take 3 times before they will work.
I have 3 hard drives (internal and external)
20mb connection
I have formated my system + reinstalled xp. Have tried with and without virus software.
Have updated to the latest versions of winrar to extract.

Could this be a problem with my line ? I have been downloading rar files for years and never come across this problem before.

thanks

[Kymmy]

Is this from newsgroups? If so then it could be the Yenc settings on your news reader.

Use Par2/PAR files for the mean time until you get a chance to try another news reader

If not from newsgroups then no idea

[Walford]

It could be the rar files them selves, but you said they work on the third time of downloading. Maybe there is a problem with the server which is hosting them and as there being sent they are corrupted. Do you have a link to one that you have found that is corrupted so I can see if I'm having the same trouble too?

Jack :D

[pazor]

Hi all thanks for the quick replys, I use rapidshare to download from. And it dont seem to be the rar files as they work as i say after a few attemps.
Sorry dont have links at the moment as im at work. Could this be noise on the line or anything like that ? sorry no idea what im talking about :)

[Walford]

Hi all thanks for the quick replys, I use rapidshare to download from. And it dont seem to be the rar files as they work as i say after a few attemps.
Sorry dont have links at the moment as im at work. Could this be noise on the line or anything like that ? sorry no idea what im talking about :)

Maybe it could be a problem with a server on the VirginMedia network that the data passes through in order to reach your home.

[pazor]

is there any tests i can run on my pc/router that would show up any problems ?

[suggsy]

is there any tests i can run on my pc/router that would show up any problems ?

I second Kymmy's idea of try opening the par files with quickpar (windows), or macpar (mac)

Hope this helps, also try using newsgroups.

[pazor]

Hi, unfortuanly people dont seem to include par files :(

[bubblegun]

Hi there.

Hopefully someone can help me with a problem i have been having.
Whenever i download rar files about 60% of them are corrupt. I have to delete and redownload them sometime it can take 3 times before they will work.
I have 3 hard drives (internal and external)
20mb connection
I have formated my system + reinstalled xp. Have tried with and without virus software.
Have updated to the latest versions of winrar to extract.

Could this be a problem with my line ? I have been downloading rar files for years and never come across this problem before.

thanks

I had a similar problem on one PC which was a self build, found the reason was corrupt memory. Download memtest86 and check this.

[suggsy]

Hi, unfortuanly people dont seem to include par files :(


I don't know if you use newsgroups, but if you don't and want to, let me know and i'll tell you which usenet and grabber i use, (not sure if i can mention the name on here) i'm on 50mg b/b and d/l films in about 1 min 30 secs, most with par files.

[dontpannic]

We have intermittant problems from rapidshare too - I just put it down to a problem at Rapidshare but if you try the same file the following day then its fine.

[techyguy4]

I believe you are going through a router. If yes, try disabling the "SPI Firewall" and reboot the router. It should resolve the problem.;)

[pazor]

Thanks guys for the all the replys, Techyguy i did what you said and downloaded some files this morning, 3 out of 60 was corupt so it looks like it helped thanks.

[frazzeld]

How much RAM have you installed?
Virtual Memory?

[Nilrem]

From memory (no pun intended), slightly dodgy memory can give errors that tend to show up when decompressing zip/rar type files.

So it might be worth running a memory test if you've not already done so.
I beleive Vista has it's own tester, otherwise memtest and memtest 86, both available either separately or as part of the ultimate boot disk are good.

[deathtrap3000]

I have a similar problem. When I use Vista or Win7, I get corrupted files all the time. But when I use Xp, I almost never get a corrupt file. I dont understand why.

[Peter_]

Not Virgin related from what I can see so why posted in this section as definitely not within the Virgin support scope.

[pazor]

I posted this here because i download these files using virgin media connection, and looking at things today its the connection.
My two friends brought there laptops around my house for a test and everyone of us had 60% of our downloads corupt.
When downloaded again on there internet no corupt files.

Can anyone tell if there is a problem with the power on my modem ?
Ill copy some info to see if anyone can spot any probs,

Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 298750000 306750000 314750000 322750000
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y Y/Y/Y
Channel Id 53 54 55 56
Modulation 256QAM 256QAM 256QAM 256QAM
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 6.952
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level
(dBmV) 2.56 2.10 2.12 2.24
RxMER
(dB) 38.26 38.26 38.61 39.40
Correctable
Codewords 15 21 11 11
Uncorrectable
Codewords 273 239 265 264

[Peter_]

I posted this here because i download these files using virgin media connection, and looking at things today its the connection.
My two friends brought there laptops around my house for a test and everyone of us had 60% of our downloads corupt.
When downloaded again on there internet no corupt files.

Can anyone tell if there is a problem with the power on my modem ?
Ill copy some info to see if anyone can spot any probs,

Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 298750000 306750000 314750000 322750000
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y Y/Y/Y
Channel Id 53 54 55 56
Modulation 256QAM 256QAM 256QAM 256QAM
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 6.952
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level
(dBmV) 2.56 2.10 2.12 2.24
RxMER
(dB) 38.26 38.26 38.61 39.40
Correctable
Codewords 15 21 11 11
Uncorrectable
Codewords 273 239 265 264


Spot on for 50Mb.

[Ignitionnet]

*Wonders pensively if there's a dodgy ethernet cable connecting modem to router, and when direct to PC it wasn't as bad.