I cannot run more than one of the Mozilla derivatives at any one time. If I try to start a second one, it crashes. I cannot prove it beyond any doubt, but I am convinced that the problem is that there is not enough shared memory left, after I get the first one started. It doesn't matter what order I start them in, or whether I use RUN!, or not, the second one never even gets started.
I normally use Firefox (now 38.8.0) for browsing, PMMail for e-mail, and Pronews/2 for news groups. Most of the time I can use that combination without problems,but FF seems to consistently eat more shared memory space, and depending on what I am doing, it may crash in a couple of hours, or it may crash after a couple of days. I can watch the amount of shared memory space shrink, until it gets to about 100 meg free, then it is only a matter of time before the crash, and sometimes, the crash takes out the whole system.
I do not use upper shared memory with these programs, simply because they crash about 80% of the time, when terminated, and about 80% of the crashes, cause the whole system to crash. I do have the 106 kernel installed, which is supposed to have a fix for that problem and I have lots of upper shared memory available. Obviously, the unload problem isn't fixed.
I do use upper shared memory for AOO 4.12. That works okay as long as I also use the Quick start feature, which keeps the DLLs loaded. If I don't do that, it crashes about 80% of the time on close, and 80% of the crashes take out the whole system. Most inconvenient. If I load AOO low, it becomes another program that must run alone, because it uses too much shared memory.
After doing a lot of experimenting, I can't seem to reduce the amount of lower shared memory that I need, and that causes me to reboot almost every day. Something needs to be done about this problem.