It's common for someone to say they have never had a problem with offline mode. I find this frankly baffling. It doesn't help the person who has the problem, it's just rubbing their nose in it.
I didn't have problems for a long time, back when I manually started steam when i needed it and shut it down when I finished. Once I started using the community features, I let windows manage it. Then I started having problems when offline (which happens often enough with my internet connection). I never made the connection to the fact that steam was now starting up with windows, and wasn't being shut down manually.
For some people, this doesn't cause a problem. For me and some others, it does. Thanks to that thread above, I have a fix now. I hope Chris can find a fix for his problem.
It was is reply to Rroff and it shows that its more down to a number of factors that it seems no one has the answer for as every time some says its because of this particular factor with Offline mode when im in that situation its not a problem so it must be more than just that, so it must be more than steam and games updating, there must be another factor to it.
Maybe it should be what is it that makes it constantly reliable on others PCs and what do they have in common.
It could be down to a combination.
PC Crash
UAC being off
Antivirus
Firewalls
Shared network and router setting.
Same account on multiple PCs
Same account on multiple PCs with some PCs having updated steam/games while others don't.
Corrupted Files due to unstable PC.
Verify Integrity of Game Cache ? what screwed it up in the first place would be also on my mind regardless that doing so sorted out the issue of that particular game.
I don't get AMD driver BSOD usually but i started getting them this week and BF3 freezing, the first thing i look at is something being up at my end, killed all overclocking, ran the latest bootable Memtest, pulled the bad sticks, boot up and steam is doing what i posted, looks like the bad sticks was messing up steam quietly as well which steam is correcting.
But i could have not tested the system and just had ago at AMD and steam for being **** this week and there after.
The thing is sometimes the problem is them and sometimes the problem isn't.
Even though its a steam feature having the same account on multiple PCs and wanting to go off-line is going to give problems,
Credentials for off line mode should only be on one PC at a time or there would be nothing to stop someone activating an account on a PC then pulling the internet and boot, steam asking to start in offline mode and doing the same on PC after PC, getting steam email with Access from new computer would not be killing the other offline accounts on the other PCs as they are not connected to the net.