This is on a W2K3R2 SQL2005 32_bit server currently running 18.104.22.168 moving to 7.1 shortly.
We believe that this is a process that must be leaking memory causing this so I just want to confirm.
It starts off with a backup job thats fails with a VDI 1010 error that throws an SQL error 3013 followed by an SQL error 18210 BackupVirtualDeviceSet::Initialize: Request large buffers failure on backup device 'SQLBACKUP_4A05EA30-4CCE-4FE8-8817-CBA59951F70C'. Operating system error 0x800705aa(error not found).
This gets followed by another backup job failing with SQL error 18452: Login failed for user ''. The user is not associated with a trusted SQL Server connection. or with SQL error -2147467259: Cannot generate SSPI context and SQL error -2146893056: SQL Network Interfaces: Not enough memory is available to complete this request.
This only started to happen last week when we believe a new process was introduced that could be leaking memory.
I am hoping I have provided enough info that my memory concern can be confirmed.