Incorrect (and wierd) connect time

[stanley]

I've got FM Server 5.5 running on a G3 with OS 8.6 and the thing has been up an running about 200 days straight without a hitch. Today I came in and five of the 14 guests show connection times of 45 days 0 hours 0 minutes. This is incorrect - these machines have been running a day or two each, tops. Also, as the day has progressed, the numbers haven't changed. All the other guests are showing correct information, and it is all changing just as it ought to. Has anyone ever seen this? Am I looking at an impending crash?

The machines in question are a mixed bunch - an iMac, a G3, a couple of PCs - so I think this is on the server side.

Thanks in advance

Stanley