Ethernet flapping problem

[gmc]

I've for a PI running the lastest build with Sickbeard and SABNzbd, with the overclock set up medium.

For the past month its been running fine.

Yesterday it dropped off the network and I had to reboot. After the reboot it looks like the SD card became corrupt so I had to restore.

It was up and running again but then did the same thing a few hours later - another reboot but this time it rebooted ok. In the syslog I see this:

Oct 17 06:13:28 raspberrypi ifplugd(eth0)[1329]: Link beat detected.
Oct 17 06:13:28 raspberrypi kernel: [31068.424998] smsc95xx 1-1.1:1.0: eth0: link down
Oct 17 06:13:29 raspberrypi ifplugd(eth0)[1329]: Link beat lost.
Oct 17 06:13:30 raspberrypi kernel: [31069.987448] smsc95xx 1-1.1:1.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
Oct 17 06:13:30 raspberrypi kernel: [31070.585256] smsc95xx 1-1.1:1.0: eth0: link down
Oct 17 06:13:32 raspberrypi kernel: [31072.163709] smsc95xx 1-1.1:1.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
Oct 17 06:13:32 raspberrypi kernel: [31072.385222] smsc95xx 1-1.1:1.0: eth0: link down
Oct 17 06:13:34 raspberrypi kernel: [31073.987939] smsc95xx 1-1.1:1.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
Oct 17 06:13:34 raspberrypi ifplugd(eth0)[1329]: Link beat detected.
Oct 17 06:13:35 raspberrypi kernel: [31075.017805] smsc95xx 1-1.1:1.0: eth0: link down

This is repeated over and over until I reset it.

Any ideas what would cause this?

Also on a side note - when I have to pull the power due to a problem is there anyway I can get it to do a safe shutdown (There is no monitor/keyboard on the device) to avoid future corruption on the SD Card.

[radox]

I just received 2 raspberry pi model b 512 mb today and both devices react the same way, therefore I do not assume the devices to be bad however, the constant variables in this matter could be the SD card or the RASPBMC or the WHEEZY image. Those are the two OS that I have tried so far and failed both.

These are my variables:

Wired Connection
Using iPad USB adapter to power the device
Kingston 4GB SDHC Class 6 and Tried SanDisk 4gb Class 2.

Any help at this point would be greatly appreciated.

I bought this device in anticipation of Media Centers and both seem to fail.

[gmc]

I've got a 8GB Class 10 Sandisk.

The device was powered off my servers USB port. Its weird how it just started happening after a few months of operation.

I did do an update a week or two ago though.

I've now powered the device off a main USB charger - will let you know if it does it again.

[radox]

Will start off by saying im a n00b...

This is going to be sad when I tell you how I managed to resolve my issue.
So I have verizon FIOS and all my devices that I run work off of wifi...so I rarely depend on hardwire except for the PS3.

Turns out I turn on my PS3 and kept stating Ethernet disconnected but all my wifi devices worked fine. I decided to force reboot the wireless router by turn it completely off and then back on, it resolved my issue.

Embarrassing to say but I should have check that first.

Hopefully, this will help others as well. I'm fully enjoying my RasPi now....next (real)challenge, getting the wifi dongle to work.

Anyone have experience with item number 8072 from www.monoprice.com?