Currently, we're using the Network ESL.

Here's the gist of the problem - we're crossing signals something fierce at the ESL (we assume its the ESL...). If we both happen to run a problem at the same time, any or all of the following symptoms hit us. One, we get crossed into the other's file. ie, I'm working on Calc 03, he's working on 05. we run them such that the processing times overlap, and when we get to the output, more often than not, I'll be looking at the output from 05 and he'll be looking at the output from 03 (the file names will have switched in the title bar). alternatively, it'll give us the correct output, but when we return to the input screen, THEN the calcs are switched on us (or we might BOTH end up in the same file), which is considerably more insidious, because then we can inadvertently alter nodes that we think are on our calc, and completely screw up both (it's happened already, but been minor). Outside of the crossing of files, usually it follows (or just starts with, sometimes) that one or both of us come up with a fatal error, application error, Dr Watson, or combination thereof. A frequent fault is an application error in PIERCE.EXE, or something similar. Sometimes, like right now, it crashes so hard that we're both down for the count, and it can't find the ESL at all for a few minutes.

Could there be some configuration error on the server? Has this happened to any of you guys before? Please advise. Thanks.