Adding/removing service application gives timeout expired?

Hi all,

I'm really stuck on this, maybe you guys can help:

When I try to create a new service application (or delete one) via Central Administration or PowerShell, I get time-outs.

Example PowerShell error:

Remove-SPServiceApplication : Timeout expired.  The timeout period elapsed
prior to completion of the operation or the server is not responding.
At line:1 char:1

It tells me in the event viewer that it has troubles connecting to the database server. I've checked everything, DNS, ping latency, resources, they're all fine. The rest of SharePoint works great. It's only when creating new service applications etc.

I also updated the time-out value, from 90 sec. to 300 sec, but still no luck.

Anyone ever had this problem and maybe can help me with this?

Thanks in advanced!

With kind regards,

M. Hekman