Informix Optimization

We are currently running Online 5.10 with a quad-processor (133Mhz) Intel box on UNIX. We plan on migrating to 7.x some time in the near future. I am concerned about performance as we were told Informix 5.x will not take advantage of more than one processor. Is this true? Our system idle time today was at 85%. My reaction is we need to: a) buy faster hardware; b) separate the database engine from the "main" UNIX box via networking. I suggested this and it was not received well. Any comments? Users complain (and I agree) that the system normally is running slowly. I included a copy of my TBMONITOR status report because I'm curious to see how well our machine is tuned. Any comments? Currently we have about 30% of our total user-base migrated so I expect these numbers to increase three-fold. Thanks! RSAM Version 5.10.UC1 -- On-Line -- Up 15:03:09 -- 4752 Kbytes Profile dskreads pagreads bufreads %cached dskwrits pagwrits bufwrits %cached 706591 1262633 37344263 98.11 109928 156115 588641 81.33 isamtot open start read write rewrite delete commit rollbk 37591396 1115171 3204603 14484251 107629 119811 11399 2861680 152 ovtbls ovlock ovuser ovbuff usercpu syscpu numckpts flushes 0 0 0 0 4110.25 1085.89 126 349 bufwaits lokwaits lockreqs deadlks dltouts lchwaits ckpwaits compress 37 2 31590593 0 0 5355 32 25798