Here is my top output - I'm running google chrome on desktop 1,
thunderbird on desktop 2, firefox on desktop 3, and lotus notes on
desktop 4. Firefox has 3 tabs open on facebook, running flash-based
applications. As you can see my load average is much lower than yours,
so something is eating up your CPU, and top says it's opera.

It's hard to say whether its a flash problem, but I'm not familiar
enough with opera to interpret the results. Are you running 32 or 64 bit
ubuntu?


top - 16:18:14 up 1 day, 23:34, 8 users, load average: 0.11, 0.26, 0.24
Tasks: 194 total, 1 running, 193 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.9%us, 3.7%sy, 0.3%ni, 92.9%id, 0.1%wa, 0.0%hi, 0.0%si,
0.0%st
Mem: 3080196k total, 2749296k used, 330900k free, 83108k buffers
Swap: 2000084k total, 0k used, 2000084k free, 1285904k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
COMMAND
1 root 20 0 2844 1692 544 S 0 0.1 0:01.32
/sbin/init
2 root 15 -5 0 0 0 S 0 0.0 0:00.00
[kthreadd]
3 root RT -5 0 0 0 S 0 0.0 0:00.00
[migration/0]
4 root 15 -5 0 0 0 S 0 0.0 0:05.06
[ksoftirqd/0]
5 root RT -5 0 0 0 S 0 0.0 0:00.00
[watchdog/0]
6 root RT -5 0 0 0 S 0 0.0 0:00.00
[migration/1]
7 root 15 -5 0 0 0 S 0 0.0 0:00.54
[ksoftirqd/1]
8 root RT -5 0 0 0 S 0 0.0 0:00.00
[watchdog/1]
9 root 15 -5 0 0 0 S 0 0.0 0:03.30
[events/0]
10 root 15 -5 0 0 0 S 0 0.0 0:00.66
[events/1]
11 root 15 -5 0 0 0 S 0 0.0 0:00.00
[khelper]
46 root 15 -5 0 0 0 S 0 0.0 0:00.46
[kblockd/0]
47 root 15 -5 0 0 0 S 0 0.0 0:00.34
[kblockd/1]
50 root 15 -5 0 0 0 S 0 0.0 0:00.00
[kacpid]
51 root 15 -5 0 0 0 S 0 0.0 0:00.00
[kacpi_notify]
143 root 15 -5 0 0 0 S 0 0.0 0:00.00
[kseriod]
185 root 20 0 0 0 0 S 0 0.0 0:00.00
[pdflush]