Misc problems with CDJ and CX90ES

I am experiencing a few problems with CDJ (as of 11/28), Slink-e 2.0 (with upgraded ROMs), and my 90ES player.

1. I normally run all this 24/7 in shuffle mode. After running it for a while (a day or two), discs start to "disappear". They'll get grayed out in the library list and the slink viewer will show a "no_disc" when I try to play them. If I close CDJ, then open and close the player access drawer (causing the disc memory to be reloaded) and then restart CDJ, everything is back to normal. This has actually been happening for about 6 months now - at one point Colby though it might be a grounding problem that would be fixed in slink-e 2.0, but I'm still experiencing the problem even after upgrading.

2. A more recent problem is that in shuffle mode it will occasionally stop playing. When I look at CDJ the player is shown in pause mode. If I right-click on the payer and choose Play, everything is back to normal (until the next time it happens).

3. And what I think is a very recent problem (at least I never noticed it before) is that in shuffle mode, items on the play list get randomly skipped. The green arrow moves to these items for less than a second and then moves on. These tracks/discs are not shown grayed so I think this is a different problem than #1.

4. One other problem I've noticed just occasionally is that after a track is done, I'll hear a few seconds of the next track before CDJ switches to the correct track, per the play list.

Any ideas? I'll try to get some slink traces to help.