Application slooooow with Informix 6.0.

Informix Gurus, On installing Informix 6.0, we find our application slows down tremendously. On checking the highest used processes, we find about 4 or 5 of them to be sqlrm processes, with one of them chewing up 65% of the CPU. Is something wron in our config? What is the sqlrm doing shewing up so much of CPU time? In version 5.01 we have several sqlexecs, but none of them take up so much time. Any and all responses on this matter apprecisted. Thanx, Raj.