I had some problems with my upgrade to java 1.5.0_09, which turned out to be path related. Check your paths and make sure that some of the utilities haven't moved the libraries or binaries down a level in the structure. That is what happened with Java.
Check your typing, as well. I had a problem with an i that I thought was an l, and a 1 that I thought was an i. Didn't even see it on repeated checks. Finally copied and pasted to get the correct spelling. Then changed fonts and sure enough that was it.