Problems uploading large files

Hi all, there are some bug reports regarding large file uploads, but here is an observation that might give additional hints for solving the problem: I'm not able to upload files via HTTP POST greater than 102574 KByte (with Mozilla 1.1). This applies no mater what i set max_upload_size, post_max_size, upload_max_filesize and memory_limit to. When the above limit of data is reached, the tmpfile vanishes from the tmp folder and Apache writes the log line below: [error] PHP Warning: Only 1284 bytes were written, expected to write 5119 in Unknown on line 0 This is slightly different with uploading using IE. Here the maximum upload size is about 103408 KByte, after which the same behaviour can be observed. The error message states: [Wed Aug 14 18:04:37 2002] [error] PHP Warning: Only 2255 bytes were written, expected to write 5119 in Unknown on line 0 With files below 100MByte size everything works fine. Does anybody have a clue what's going on here? PHP version is 4.2.2 with Apache 1.3.26 on Linux. Cheers Michael