It is possible to build Linux Kernel using Kernel source in a read-only location like CD/DVD media, remote server which can only be read, etc. To achieve this, pass as a parameter the location where the built Kernel image is to be placed. make O=/home/mylogin/kernels/linux-2.6.26/ Make sure that you pass all other required parameters to Make while building Kernel.

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I use Firefox as a primary browser. I always use the latest available version of Firefox, so the current installed version in my system is 3.0.1.

After updating Firefox to 3.0.1, it started to consume more than 95% CPU. That's very bad for any application. I used Process Explorer to get some details about firefox process. I found that the firefox process started a thread "WINMM.dll!timeGetSystem Time+0x44" which was consuming more CPU time.

I suspended that thread using process explorer.

Now, the CPU utilization is around 5%.

I tried this two times. As you can see in the above "CPU Usage History", CPU Usage became very less after suspending "WINMM.dll!timeGetSystem Time+0x44" thread.
I am not sure about internals of firefox, but this may give some hint on fixing the CPU consumption issue.

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Subversion provides many features similar to other SCM tools. Below is a list of features provided by Subversion.

• Commits are true atomic operations. Interrupted commit operations do not cause repository inconsistency or corruption.
• Renamed/copied/moved/removed files retain full revision history.
• Directories, renames, and file metadata (but not timestamps) are versioned. Entire directory trees can be moved around and/or copied very quickly, and retain full revision history.
• Versioning of symbolic links.
• Native support for binary files, with space-efficient binary-diff storage.
• Apache HTTP Server as network server, WebDAV/DeltaV for protocol. There is also an independent server process that uses a custom protocol over TCP/IP.
• Branching and tagging are cheap operations, independent of file size, though Subversion itself does not distinguish between a tag, a branch, and a directory
• Natively client/server, layered library design.
• Client/server protocol sends diffs in both directions.
• Costs are proportional to change size, not data size.
• Parsable output, including XML log output.
• Open source licensed — "CollabNet/Tigris.org Apache-style license"
• Internationalised program messages.
• File locking for unmergeable files ("reserved checkouts").
• Path-based authorization.
• PHP, Python, Perl, and Java language bindings.
• Full MIME support - the MIME Type of each file can be viewed or changed, with the software knowing which MIME types can have their differences from previous versions shown.

Source: http://en.wikipedia.org/wiki/Subversion_(software)

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