[sharken]

I find that the more senior you become, e.g. the longer you spend on the job, the easier it is to interrupt your work to help a colleague.

Not all are that way though, which can be annoying, but i sincerely hope they can recognize a question only comes up because it is needed to understand the subject.

Tight deadlines or production issues should take precedence though, but other than that you really should try your best to help.