kubuntu freezing

[mystified]

for some reason kubuntu has been freezing on me. I can use the mouse but when I click on something nothing happens. Then I'll come back a few hours later and the application I was truying to use is working. I don;t have much going. Usually just one thing. It's made kubuntu unusable. Thanks

[vinnywright]

if you can get a terminal open run "top" and (1)see if anything is eating up the CPU (2) if RAM is all used up.......you can post the output @hear if you can.

and run "df -h" and see if / is almost full.

VINNY

[Teunis]

Other tools to watch the computer are the System monitor that opens up by pressing Ctrl+Esc or by running the more complete version known as KSysGuard from the menu.
Top is a great tool, htop is a more complete version.

Have during such a lock-up a look at the HD light if it shows activity.

A question, your mouse is moving but you can't click on anything, are you still able to use the keyboard like Alt-Tab?

[mystified]

I checked. My hd is only 34% full. I ran top and I only had firefox and thunderbird and they were using very little resourses. I opened up ksysguard and it showed that I was only using less than 10% of resourses. I can't say if the keyboard is working because I didn't know what to try. My linux skills are so rusty. I used gentoo for five years but that was about three years ago. I have only had windows until I installed kubuntu. I will try to remember alt tab. Thanks

[SteveRiley]

Which Kubuntu release are you running?

[oshunluvr]

I would note the time the freeze occurs, and then when you get control back, look at the output of dmesg and see what's reported during that time.