Notes/Domino 6 and 7 Forum : Domino 6.0.1 on Solaris 9 not ready for primetime?

We recently moved our main Domino server to a freshly installed Solaris 9 MU2, 64 bit, dual processor machine. It seemed like a good time to upgrade to Domino 6.0.1, since we are also rolling out a server at a new location. The upgrade went exceptionally smooth, and until the system came under load, it appeared to be running fine. Except for the IT staff, the clients are still Notes 5.0.x. Mail templates are still the Notes5 ones.

After a day or so, we started noticing mail folders disappearing, and server messages like "Database is corrupt - Cannot allocate space", "document UNID... is invalid and has been deleted", "Document had invalid structure", and one about dbfolder.c, but my log got overwritten on the last crash. As I read in another post, updall, fixup, compact, all seem to get things running again, but overall things are getting worse instead of better.

I'm trying to get registered to submit a support request, and I guess it's a testament to Notes 5 that I have not needed to be registered with IBM until now. I'm considering moving it all back to Notes 5.0.x, but I'd rather not. Is anyone running 6 or 6.0.1 on Solaris? Good, bad, or ugly?

Any ideas? I know have not given enough detail for specific help. My plan is once I get a stable system back, to run fixup and compact on everything to make sure everything is R6 DB format, clean out the notes.ini of all the stuff that has built up over the years, and probably turn off the LEI transactions running on a 5.x machine which cause a high network load on the 6.0.1 server. Then I need to make sure that I get the server logs scrolled away so there's something to look at.

Thanks for any advice!