so after downtime of ~7 hours I have flashed 20130325.bin and hope the issue will go
in API log I found
[Hardware Errors] => 65267
[Temperature] => 0.00
[MHS av] => 37534.39
[MHS 5s] => 0.00
hope this helps...
(and when I come I noticed that Avalon has restartet every ~15 sec)
TIA