Upgrade to 2.3 PPPoE going up and down

[junicast]

Hi,

there is a phenomena I experienced since I went to 2.3
Details:

• Shuttle DS57U
• 4 GB RAM
• 30 GB SSD
• pfsense 2.3_1
• DSL Modem is never loosing link to upstream provider
• pppoe1 is on em0_vlan10, because it's VDSL and my provider expects to receive traffic on VID 10

That's what's happened:

I'm not really sure but I think it's since 2.3_1 that PPPoE is going crazy. I installed freshly and then restored backup. At first everything seems fine, but then PPPoE going down for a couple of minutes, then coming back for a couple of minutes and so forth for like 8 hours. After that it worked fine for a couple of days, even when I rebooted.
Some days later reinstalled again and restored config; exactly the same problems. See screenshot.
This is what the log says:
http://paste.debian.net/682842/

FYI I did not change the config for PPPoE at any given time.

What's going on here?