One interesting issue occurred when I was installing MyEclipse 9.0 on my new system. Since I have 4GB memory I didn't create Swap partition. That's a reasonable choice but I got following prompt
Your system does not have sufficient memory to support MyEclipse. MyEclipse requires 256 MBs physical memory and 64 MBs virtual memory. Your system only has 3913160 MBs of physical memory, and 0 MBs of virtual memory.
I don't know why Eclipse doesn't require virtual memory while MyEclipse does. And why 3913160 MBs (I didn't say I have 4 TB memory, MyEclipse said that) of physical memory is not sufficient.
Anyway, I'm pretty happy with new Ubuntu release but if part of Ubuntu users switch to Fedora 15, which will be released next month, I won't be surprised.