Lot's of times when something goes wrong with phone bills, it goes *very* wrong.

When I usually have a phone bill of 20 euros, and one month my bill starts rising to 5000,-.
I'd like to be able to tell them in advance to cut me off at 200,-, because if I'd ever reach that amount then something went wrong! I'd even be more than happy to pay them 20 euros of service fees for this service.

At the company I work for, mistakes happen quite frequently and there should be a way to detect them. Those mistakes amount thousands of euro's down the toilet per year. A phone bill is just completely uncontrollable.

Example: Someone creates a bill of 1000,- euros in the first week of January. I'd only notice this at 15 February when the bill of January arrives. Imagine that the trend continues all these weeks: We'd be talking about 6000,- euro's while we're expecting a bill of 100,- for that user.

Therefore you should be able to specify a maximum amount for a certain user in advance. When the costs ever reach that amount, service should be terminated.

Don't give people not familiar with SLES/Open Enterprise Server the wrong impression here. We've been using it (the complete Open Workgroup Suite) for about two years now and it works great.
The uptime/stability totally beats the crap out of some other vendors.

Also OES1 was the first release on Linux, so it had some issues that were fixed by SP1 and other updates. Open Enterprise Server 2 SP1 is a completely different experience compared to OES1 without any SP/updates.

But I'm not familiar with your situation so YMMV.

Isn't it Windows that's often doing that? Crapping out with the most vague error message you can possibly imagine and ending in: 'Please contact your system administrator'

Luckily, as a system administrator you have the ability to look right through the computer case and into the RAM modules to see exactly what has gone wrong in this particular case. Otherwise this kind of error message could just blow your day.