We haven't faced any outages while using Siebel CRM. I rate its stability an eight point five out of ten. 

Because it is on-premises, we control the stability.

The tool is stable.

Siebel CRM is a highly stable solution.

I rate Siebel CRM an eight out of ten for stability.

It is stable and reliable. There are no bugs or glitches. It's powerful.

The tool is pretty much stable.

Siebel is stable.

The latest versions of this solution are not stable. I have been working on the latest version for three and a half years and I'm still experiencing issues with stability. 

The solution is stable. There are no bugs or glitches. it doesn't crash or freeze. 

It is a stable solution, but because it is an on-premises one, we have slow response rates at times.

The solution has quite a complex set up, however, once it stabilizes, it becomes very reliable. There is no frequent downtime, though it's tightly coupled to the database so if the Siebel database does experience some degradation, it will impact the performance of the application. 

Yes, one of the feature PIM sync resulted in a memory leak after 200 concurrent users.